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<html>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
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<head>
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<title>luaposix 33.3.0 Reference</title>
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<link rel="stylesheet" href="../ldoc.css" type="text/css" />
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</head>
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<body>
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<big></big>
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luaposix 33.3.0
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Index
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Contents
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Functions
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Constants
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Modules
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posix
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posix.ctype
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posix.curses
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posix.dirent
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posix.errno
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posix.fcntl
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posix.fnmatch
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posix.getopt
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posix.glob
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posix.grp
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posix.libgen
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posix.poll
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posix.pwd
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posix.sched
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posix.signal
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posix.stdio
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posix.stdlib
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posix.sys.msg
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posix.sys.resource
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posix.sys.socket
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posix.sys.stat
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posix.sys.statvfs
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posix.sys.time
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posix.sys.times
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posix.sys.utsname
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posix.sys.wait
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posix.syslog
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posix.termio
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posix.time
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posix.unistd
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posix.utime
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Classes
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posix.curses.chstr
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posix.curses.window
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Examples
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curses.lua
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dir.lua
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fork.lua
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fork2.lua
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getopt.lua
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glob.lua
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limit.lua
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lock.lua
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netlink-uevent.lua
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ping.lua
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poll.lua
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rt_sched.lua
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signal.lua
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socket.lua
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termios.lua
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tree.lua
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Module posix.unistd
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Unix Standard APIs.
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Where the underlying system does not support one of these functions, it
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will have a nil value in the module table.
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_exit (status)
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Terminate the calling process.
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access (path[, mode="f"])
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Check real user's permissions for a file.
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chdir (path)
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Set the working directory.
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chown (path, uid, gid)
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Change ownership of a file.
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close (fd)
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Close an open file descriptor.
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crypt (trypass, salt)
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Encrypt a password.
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dup (fd)
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Duplicate an open file descriptor.
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dup2 (fd, newfd)
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Duplicate one open file descriptor to another.
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exec (path, argt)
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Execute a program without using the shell.
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execp (path, argt)
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Execute a program using the shell.
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fdatasync (fd)
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Synchronize a file's in-core state with storage device without metadata.
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fork ()
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Fork this program.
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fsync (fd)
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Synchronize a file's in-core state with storage device.
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getcwd ()
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Current working directory for this process.
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getegid ()
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Return effective group id of calling process.
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geteuid ()
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Return effective user id of calling process.
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getgid ()
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Return group id of calling process.
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getgroups ()
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Get list of supplementary group ids.
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gethostid ()
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Get host id.
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getpgrp ()
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Return process group id of calling process.
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getpid ()
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Return process id of calling process.
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getppid ()
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Return parent process id of calling process.
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getuid ()
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Return user id of calling process.
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isatty (fd)
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Test whether a file descriptor refers to a terminal.
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link (target, link[, soft=false])
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Create a link.
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lseek (fd, offset, whence)
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reposition read/write file offset
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nice (inc)
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change process priority
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pathconf (path, key)
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Get a value for a configuration option for a filename.
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pipe ()
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Creates a pipe.
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read (fd, count)
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437b5e |
Read bytes from a file.
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437b5e |
readlink (path)
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437b5e |
Read value of a symbolic link.
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437b5e |
rmdir (path)
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437b5e |
Remove a directory.
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437b5e |
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437b5e |
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437b5e |
setpid (what, id[, gid])
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437b5e |
Set the uid, euid, gid, egid, sid or pid & gid.
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437b5e |
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437b5e |
sleep (seconds)
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437b5e |
Sleep for a number of seconds.
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437b5e |
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437b5e |
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437b5e |
sync ()
|
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437b5e |
Commit buffer cache to disk.
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437b5e |
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437b5e |
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437b5e |
sysconf (key)
|
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437b5e |
Get configuration information at runtime.
|
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437b5e |
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437b5e |
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ttyname ([fd=0])
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437b5e |
Name of a terminal device.
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437b5e |
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437b5e |
unlink (path)
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437b5e |
Unlink a file.
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437b5e |
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437b5e |
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write (fd, buf)
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437b5e |
Write bytes to a file.
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posix.unistd
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Standard constants.
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Functions
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_exit (status)
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437b5e |
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437b5e |
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437b5e |
Terminate the calling process.
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Parameters:
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status
|
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int
|
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process exit status
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See also:
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437b5e |
_exit(2)
|
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access (path[, mode="f"])
|
|
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437b5e |
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437b5e |
|
|
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437b5e |
Check real user's permissions for a file.
|
|
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437b5e |
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437b5e |
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|
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437b5e |
Parameters:
|
|
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437b5e |
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|
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437b5e |
path
|
|
Packit |
437b5e |
string
|
|
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437b5e |
file to act on
|
|
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437b5e |
|
|
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437b5e |
mode
|
|
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437b5e |
string
|
|
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437b5e |
can contain 'r','w','x' and 'f'
|
|
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437b5e |
(default "f")
|
|
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437b5e |
|
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437b5e |
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437b5e |
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|
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437b5e |
Returns:
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|
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437b5e |
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|
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437b5e |
|
|
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437b5e |
int
|
|
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437b5e |
0, if successful
|
|
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437b5e |
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437b5e |
Or
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437b5e |
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437b5e |
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437b5e |
nil
|
|
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437b5e |
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437b5e |
string
|
|
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437b5e |
error message
|
|
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437b5e |
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|
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437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
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437b5e |
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437b5e |
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See also:
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437b5e |
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437b5e |
access(2)
|
|
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437b5e |
|
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437b5e |
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|
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437b5e |
Usage:
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437b5e |
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|
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437b5e |
status, errstr, errno = P.access("/etc/passwd", "rw")
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|
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437b5e |
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437b5e |
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437b5e |
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437b5e |
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437b5e |
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437b5e |
chdir (path)
|
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437b5e |
|
|
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437b5e |
|
|
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437b5e |
Set the working directory.
|
|
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437b5e |
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437b5e |
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|
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437b5e |
Parameters:
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437b5e |
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437b5e |
path
|
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437b5e |
string
|
|
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437b5e |
file to act on
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437b5e |
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437b5e |
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437b5e |
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437b5e |
Returns:
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437b5e |
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437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
chdir(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
status, errstr, errno = P.chdir("/var/tmp")
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
chown (path, uid, gid)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Change ownership of a file.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
existing file path
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
uid
|
|
Packit |
437b5e |
string or int
|
|
Packit |
437b5e |
new owner user id
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
gid
|
|
Packit |
437b5e |
string or int
|
|
Packit |
437b5e |
new owner group id
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error messoge
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
chown(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
print(P.chown("/etc/passwd",100,200))
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
close (fd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Close an open file descriptor.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
file descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0 if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
close(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
local ok, errmsg = P.close (log)
|
|
Packit |
437b5e |
if not ok then error (errmsg) end
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
crypt (trypass, salt)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Encrypt a password.
|
|
Packit |
437b5e |
Not recommended for general encryption purposes.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
trypass
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
string to hash
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
salt
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
two-character string from [a-zA-Z0-9./]
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
encrypted string
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
crypt(3)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
local salt, hash = pwent:match ":$6$(.-)$([^:]+)"
|
|
Packit |
437b5e |
if P.crypt (trypass, salt) ~= hash then
|
|
Packit |
437b5e |
error "wrong password"
|
|
Packit |
437b5e |
end
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
dup (fd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Duplicate an open file descriptor.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
file descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
new file descriptor duplicating fd, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
dup(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
local outfd = P.dup (P.fileno (io.stdout))
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
dup2 (fd, newfd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Duplicate one open file descriptor to another.
|
|
Packit |
437b5e |
If newfd references an open file already, it is closed before being
|
|
Packit |
437b5e |
reallocated to fd.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
an open file descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
newfd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
new descriptor to duplicate fd
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
new file descriptor, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
dup2(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
exec (path, argt)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Execute a program without using the shell.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
argt
|
|
Packit |
437b5e |
table
|
|
Packit |
437b5e |
arguments (table can include index 0)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
execve(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
exec ("/bin/bash", {[0] = "-sh", "--norc})
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
execp (path, argt)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Execute a program using the shell.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
argt
|
|
Packit |
437b5e |
table
|
|
Packit |
437b5e |
arguments (table can include index 0)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
execve(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fdatasync (fd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Synchronize a file's in-core state with storage device without metadata.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fdatasync(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fork ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Fork this program.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0 in the resulting child process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
process id of child, in the calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fork(2)
|
|
Packit |
437b5e |
fork.lua
|
|
Packit |
437b5e |
fork2.lua
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
local pid, errmsg = P.fork ()
|
|
Packit |
437b5e |
if pid == nil then
|
|
Packit |
437b5e |
error (errmsg)
|
|
Packit |
437b5e |
elseif pid == 0 then
|
|
Packit |
437b5e |
print ("in child:", P.getpid "pid")
|
|
Packit |
437b5e |
else
|
|
Packit |
437b5e |
print (P.wait (pid))
|
|
Packit |
437b5e |
end
|
|
Packit |
437b5e |
os.exit ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fsync (fd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Synchronize a file's in-core state with storage device.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fsync(2)
|
|
Packit |
437b5e |
sync
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getcwd ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Current working directory for this process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
path of current working directory, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getcwd(3)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getegid ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Return effective group id of calling process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
effective group id of calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getgid
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
geteuid ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Return effective user id of calling process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
effective user id of calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getuid
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getgid ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Return group id of calling process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
group id of calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getegid
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getgroups ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Get list of supplementary group ids.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
table
|
|
Packit |
437b5e |
group id
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getgroups(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
gethostid ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Get host id.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
host id
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
gethostid(3)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getpgrp ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Return process group id of calling process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
process group id of calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getpid
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getpid ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Return process id of calling process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
process id of calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getppid ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Return parent process id of calling process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
parent process id of calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getpid
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
getuid ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Return user id of calling process.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
user id of calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
geteuid
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
isatty (fd)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Test whether a file descriptor refers to a terminal.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
file descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
1 if fd is open and refers to a terminal, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
isatty(3)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
link (target, link[, soft=false])
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Create a link.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
target
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
name
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
link
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
name
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
soft
|
|
Packit |
437b5e |
bool
|
|
Packit |
437b5e |
link
|
|
Packit |
437b5e |
(default false)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
link(2)
|
|
Packit |
437b5e |
symlink(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
lseek (fd, offset, whence)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
reposition read/write file offset
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
open file descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
offset
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
bytes to seek
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
whence
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of SEEK_SET, SEEK_CUR or SEEK_END
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
new offset, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
lseek(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nice (inc)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
change process priority
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
inc
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
adds inc to the nice value for the calling process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
new nice value, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nice(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
pathconf (path, key)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Get a value for a configuration option for a filename.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
optional
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
key
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of _PC_LINK_MAX, _PC_MAX_CANON, _PC_NAME_MAX,
|
|
Packit |
437b5e |
_PC_PIPE_BUF, _PC_CHOWN_RESTRICTED, _PC_NO_TRUNC or
|
|
Packit |
437b5e |
_PC_VDISABLE
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
associated path configuration value
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
pathconf(3)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
for a, b in pairs (P.pathconf "/dev/tty") do print(a, b) end
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
pipe ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Creates a pipe.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
read end file descriptor
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
write end file descriptor
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
pipe(2)
|
|
Packit |
437b5e |
fork.lua
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
read (fd, count)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Read bytes from a file.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
the file descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
count
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of bytes to read
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
string from fd with at most count bytes, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
read(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
readlink (path)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Read value of a symbolic link.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
file to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
link target, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
readlink(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
rmdir (path)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Remove a directory.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
file to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
rmdir(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
setpid (what, id[, gid])
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Set the uid, euid, gid, egid, sid or pid & gid.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
what
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
one of 'u', 'U', 'g', 'G', 's', 'p' (upper-case means "effective")
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
id
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
(uid, gid or pid for every value of what except 's')
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
gid
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
(only for what value 'p')
|
|
Packit |
437b5e |
(optional)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
setuid(2)
|
|
Packit |
437b5e |
seteuid(2)
|
|
Packit |
437b5e |
setgid(2)
|
|
Packit |
437b5e |
setegid(2)
|
|
Packit |
437b5e |
setsid(2)
|
|
Packit |
437b5e |
setpgid(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sleep (seconds)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Sleep for a number of seconds.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
seconds
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
minimum numebr of seconds to sleep
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0 if the requested time has elapsed
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
unslept seconds remaining, if interrupted
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sleep(3)
|
|
Packit |
437b5e |
posix.time.nanosleep
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sync ()
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Commit buffer cache to disk.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fsync
|
|
Packit |
437b5e |
sync(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sysconf (key)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Get configuration information at runtime.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
key
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
one of _SC_ARG_MAX, _SC_CHILD_MAX, _SC_CLK_TCK, _SC_JOB_CONTROL,
|
|
Packit |
437b5e |
_SC_OPEN_MAX, _SC_NGROUPS_MAX, _SC_SAVED_IDS, _SC_STREAM_MAX,
|
|
Packit |
437b5e |
_SC_TZNAME_MAX or _SC_VERSION,
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
associated system configuration value
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
sysconf(3)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
ttyname ([fd=0])
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Name of a terminal device.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
file descriptor to process
|
|
Packit |
437b5e |
(default 0)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string name
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
ttyname(3)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
unlink (path)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Unlink a file.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
path
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
0, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
unlink(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
write (fd, buf)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Write bytes to a file.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Parameters:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
fd
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
the file descriptor to act on
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
buf
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
containing bytes to write
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Returns:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
number of bytes written, if successful
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Or
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
nil
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
string
|
|
Packit |
437b5e |
error message
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
errnum
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
See also:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
write(2)
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Constants
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
posix.unistd
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Standard constants.
|
|
Packit |
437b5e |
Any constants not available in the underlying system will be nil valued.
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Fields:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_CHOWN_RESTRICTED
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
return 1 if chown requires appropriate privileges, 0 otherwise
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_LINK_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum file link count
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_MAX_CANON
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum bytes in terminal canonical input line
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_MAX_INPUT
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of bytes in a terminal input queue
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_NAME_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of bytes in a file name
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_NO_TRUNC
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
return 1 if over-long file names are truncated
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_PATH_MAXmaximum
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
number of bytes in a pathname
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_PIPE_BUF
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of bytes in an atomic pipe write
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_PC_VDISABLE
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
terminal character disabling value
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_ARG_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum bytes of argument to posix.unistd.execp
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_CHILD_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of processes per user
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_CLK_TCK
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
statistics clock frequency
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_JOB_CONTROL
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
return 1 if system has job control, -1 otherwise
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_NGROUPS_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of supplemental groups
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_OPEN_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of open files per user
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_SAVED_IDS
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
return 1 if system supports saved user and group ids, -1 otherwise
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_STREAM_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of streams per process
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_TZNAME_MAX
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
maximum number of timezone types
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
_SC_VERSION
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
POSIX.1 compliance version
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SEEK_CUR
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
relative file pointer position
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SEEK_END
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
set file pointer to the end of file
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
SEEK_SET
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
absolute file pointer position
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
STDERR_FILENO
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
standard error file descriptor
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
STDIN_FILENO
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
standard input file descriptor
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
STDOUT_FILENO
|
|
Packit |
437b5e |
int
|
|
Packit |
437b5e |
standard output file descriptor
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
Usage:
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
for name, value in pairs (require "posix.unistd") do
|
|
Packit |
437b5e |
if type (value) == "number" then
|
|
Packit |
437b5e |
print (name, value)
|
|
Packit |
437b5e |
end
|
|
Packit |
437b5e |
end
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
generated by LDoc 1.4.3
|
|
Packit |
437b5e |
Last updated 2015-03-01 09:06:02
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
|
|
Packit |
437b5e |
</body>
|
|
Packit |
437b5e |
</html>
|