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    <title>luaposix 33.3.0 Reference</title>
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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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      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.stdlib

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            Standard Posix Library functions.

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            Functions

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            	abort ()
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            	Abort the program immediately.
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            	getenv ([name])
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            	Get value of environment variable, or all variables.
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            	grantpt (fd)
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            	Grant access to a slave pseudoterminal
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            	mkdtemp (templ)
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            	Create a unique temporary directory.
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            	mkstemp (templ)
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            	Create a unique temporary file.
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            	openpt (oflags)
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            	Open a pseudoterminal.
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            	ptsname (fd)
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            	Get the name of a slave pseudo-terminal
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            	realpath (path)
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            	Find canonicalized absolute pathname.
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            	setenv (name[, value[, overwrite]])
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            	Set an environment variable for this process.
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            	unlockpt (fd)
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            	Unlock a pseudoterminal master/slave pair
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            Functions

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                abort ()
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                Abort the program immediately.
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            See also:

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                       abort(3)
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                  getenv ([name])
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                  Get value of environment variable, or all variables.
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              Parameters:

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              • name
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                            string
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                         if nil, get all
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                         (optional)
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                Returns:

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                          value if name given, otherwise a name-indexed table of values.
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                  See also:

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                             getenv(3)
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                    Usage:

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                      for a,b in pairs(posix.getenv()) do print(a, b) end
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                          grantpt (fd)
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                          Grant access to a slave pseudoterminal
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                      Parameters:

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                      • fd
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                                    int
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                                 descriptor returned by openpt
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                        Returns:

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                                     int
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                                  0, if successful
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                          Or

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                                    nil
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                                       string
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                                    error message
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                                       int
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                                    errnum
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                            See also:

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                            • grantpt(3)
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                            • openpt
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                            • ptsname
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                            • unlockpt
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                                  mkdtemp (templ)
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                                  Create a unique temporary directory.
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                              Parameters:

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                              • templ
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                                            string
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                                         pattern that ends in six 'X' characters
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                                Returns:

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                                             string
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                                          path to directory, if successful
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                                  Or

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                                            nil
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                                               string
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                                            error message
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                                               int
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                                            errnum
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                                    See also:

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                                               mkdtemp(3)
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                                          mkstemp (templ)
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                                          Create a unique temporary file.
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                                      Parameters:

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                                      • templ
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                                                    string
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                                                 pattern that ends in six 'X' characters
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                                        Returns:

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                                                     int
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                                                  open file descriptor
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                                          Or

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                                                       string
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                                                    path to file, if successful
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                                                    nil
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                                                       string
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                                                    error message
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                                                       int
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                                                    errnum
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                                            See also:

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                                                       mkstemp(3)
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                                              Usage:

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                                                P.mkstemp 'wooXXXXXX'
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                                                    openpt (oflags)
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                                                    Open a pseudoterminal.
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                                                Parameters:

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                                                • oflags
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                                                              int
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                                                           bitwise OR of zero or more of O_RDWR and O_NOCTTY
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                                                  Returns:

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                                                            file descriptor of pseudoterminal, if successful
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                                                    Or

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                                                              nil
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                                                                 string
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                                                              error message
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                                                                 int
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                                                              errnum
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                                                      See also:

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                                                      • posix_openpt(3)
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                                                      • grantpt
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                                                      • ptsname
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                                                      • unlockpt
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                                                            ptsname (fd)
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                                                            Get the name of a slave pseudo-terminal
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                                                        Packit 437b5e
                                                            

                                                        Parameters:

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                                                          Packit 437b5e
                                                                  
                                                        • fd
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                                                                      int
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                                                                   descriptor returned by openpt
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                                                          Packit 437b5e
                                                              
                                                          Packit 437b5e
                                                          Packit 437b5e
                                                              

                                                          Returns:

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                                                                    path name of the slave terminal device, if successful
                                                            Packit 437b5e
                                                                
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                                                            Or

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                                                                      nil
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                                                                         string
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                                                                      error message
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                                                                         int
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                                                                      errnum
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                                                              See also:

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                                                                Packit 437b5e
                                                                         
                                                              • ptsname(3)
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                                                              • grantpt
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                                                              • unlockpt
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                                                                    realpath (path)
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                                                                    Find canonicalized absolute pathname.
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                                                                Packit 437b5e
                                                                    

                                                                Parameters:

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                                                                  Packit 437b5e
                                                                          
                                                                • path
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                                                                              string
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                                                                           file to act on
                                                                  Packit 437b5e
                                                                          
                                                                  Packit 437b5e
                                                                      
                                                                  Packit 437b5e
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                                                                  Returns:

                                                                  Packit 437b5e
                                                                      
                                                                    Packit 437b5e
                                                                    Packit 437b5e
                                                                               string
                                                                    Packit 437b5e
                                                                            canonicalized absolute path, if successful
                                                                    Packit 437b5e
                                                                        
                                                                    Packit 437b5e
                                                                         

                                                                    Or

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                                                                              nil
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                                                                    2. Packit 437b5e
                                                                                 string
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                                                                              error messag
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                                                                    3. Packit 437b5e
                                                                                 int
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                                                                              errnum
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                                                                      Packit 437b5e
                                                                      Packit 437b5e
                                                                      Packit 437b5e
                                                                          

                                                                      See also:

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                                                                        Packit 437b5e
                                                                                 realpath(3)
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                                                                        Packit 437b5e
                                                                        Packit 437b5e
                                                                        Packit 437b5e
                                                                        Packit 437b5e
                                                                            
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                                                                            setenv (name[, value[, overwrite]])
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                                                                            Set an environment variable for this process.
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                                                                        (Child processes will inherit this)
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                                                                        Packit 437b5e
                                                                        Packit 437b5e
                                                                            

                                                                        Parameters:

                                                                        Packit 437b5e
                                                                            
                                                                          Packit 437b5e
                                                                                  
                                                                        • name
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                                                                                      string
                                                                          Packit 437b5e
                                                                          Packit 437b5e
                                                                          Packit 437b5e
                                                                          Packit 437b5e
                                                                                  
                                                                          Packit 437b5e
                                                                                  
                                                                        • value
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                                                                                      string
                                                                          Packit 437b5e
                                                                                   (maybe nil, meaning 'unset')
                                                                          Packit 437b5e
                                                                                   (optional)
                                                                          Packit 437b5e
                                                                                  
                                                                          Packit 437b5e
                                                                                  
                                                                        • overwrite
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                                                                                   non-nil prevents overwriting a variable
                                                                          Packit 437b5e
                                                                                   (optional)
                                                                          Packit 437b5e
                                                                                  
                                                                          Packit 437b5e
                                                                              
                                                                          Packit 437b5e
                                                                          Packit 437b5e
                                                                              

                                                                          Returns:

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                                                                            Packit 437b5e
                                                                            Packit 437b5e
                                                                                       int
                                                                            Packit 437b5e
                                                                                    0, if successful
                                                                            Packit 437b5e
                                                                                
                                                                            Packit 437b5e
                                                                                 

                                                                            Or

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                                                                              Packit 437b5e
                                                                                      
                                                                            1. Packit 437b5e
                                                                                      nil
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                                                                            2. Packit 437b5e
                                                                                         string
                                                                              Packit 437b5e
                                                                                      error message
                                                                              Packit 437b5e
                                                                                      
                                                                            3. Packit 437b5e
                                                                                         int
                                                                              Packit 437b5e
                                                                                      errnum
                                                                              Packit 437b5e
                                                                                  
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                                                                              See also:

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                                                                                Packit 437b5e
                                                                                         setenv(3)
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                                                                                Packit 437b5e
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                                                                                Packit 437b5e
                                                                                    unlockpt (fd)
                                                                                Packit 437b5e
                                                                                    
                                                                                Packit 437b5e
                                                                                    
                                                                                Packit 437b5e
                                                                                    Unlock a pseudoterminal master/slave pair
                                                                                Packit 437b5e
                                                                                Packit 437b5e
                                                                                Packit 437b5e
                                                                                    

                                                                                Parameters:

                                                                                Packit 437b5e
                                                                                    
                                                                                  Packit 437b5e
                                                                                          
                                                                                • fd
                                                                                • Packit 437b5e
                                                                                              int
                                                                                  Packit 437b5e
                                                                                           descriptor returned by openpt
                                                                                  Packit 437b5e
                                                                                          
                                                                                  Packit 437b5e
                                                                                      
                                                                                  Packit 437b5e
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                                                                                  Returns:

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                                                                                    Packit 437b5e
                                                                                    Packit 437b5e
                                                                                               int
                                                                                    Packit 437b5e
                                                                                            0, if successful
                                                                                    Packit 437b5e
                                                                                        
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                                                                                    Or

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                                                                                      Packit 437b5e
                                                                                              
                                                                                    1. Packit 437b5e
                                                                                              nil
                                                                                      Packit 437b5e
                                                                                              
                                                                                    2. Packit 437b5e
                                                                                                 string
                                                                                      Packit 437b5e
                                                                                              error message
                                                                                      Packit 437b5e
                                                                                              
                                                                                    3. Packit 437b5e
                                                                                                 int
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                                                                                              errnum
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                                                                                      Packit 437b5e
                                                                                      Packit 437b5e
                                                                                          

                                                                                      See also:

                                                                                      Packit 437b5e
                                                                                          
                                                                                        Packit 437b5e
                                                                                                 
                                                                                      • unlockpt(3)
                                                                                      • Packit 437b5e
                                                                                                 
                                                                                      • openpt
                                                                                      • Packit 437b5e
                                                                                                 
                                                                                      • ptsname
                                                                                      • Packit 437b5e
                                                                                                 
                                                                                      • grantpt
                                                                                      • Packit 437b5e
                                                                                            
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                                                                                        Packit 437b5e
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                                                                                        generated by LDoc 1.4.3
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                                                                                        Last updated 2015-03-01 09:06:02 
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