Blame install-sh

Packit 664db3
#!/bin/sh
Packit 664db3
# install - install a program, script, or datafile
Packit 664db3
Packit 664db3
scriptversion=2006-12-25.00
Packit 664db3
Packit 664db3
# This originates from X11R5 (mit/util/scripts/install.sh), which was
Packit 664db3
# later released in X11R6 (xc/config/util/install.sh) with the
Packit 664db3
# following copyright and license.
Packit 664db3
#
Packit 664db3
# Copyright (C) 1994 X Consortium
Packit 664db3
#
Packit 664db3
# Permission is hereby granted, free of charge, to any person obtaining a copy
Packit 664db3
# of this software and associated documentation files (the "Software"), to
Packit 664db3
# deal in the Software without restriction, including without limitation the
Packit 664db3
# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
Packit 664db3
# sell copies of the Software, and to permit persons to whom the Software is
Packit 664db3
# furnished to do so, subject to the following conditions:
Packit 664db3
#
Packit 664db3
# The above copyright notice and this permission notice shall be included in
Packit 664db3
# all copies or substantial portions of the Software.
Packit 664db3
#
Packit 664db3
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Packit 664db3
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Packit 664db3
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
Packit 664db3
# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
Packit 664db3
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
Packit 664db3
# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Packit 664db3
#
Packit 664db3
# Except as contained in this notice, the name of the X Consortium shall not
Packit 664db3
# be used in advertising or otherwise to promote the sale, use or other deal-
Packit 664db3
# ings in this Software without prior written authorization from the X Consor-
Packit 664db3
# tium.
Packit 664db3
#
Packit 664db3
#
Packit 664db3
# FSF changes to this file are in the public domain.
Packit 664db3
#
Packit 664db3
# Calling this script install-sh is preferred over install.sh, to prevent
Packit 664db3
# `make' implicit rules from creating a file called install from it
Packit 664db3
# when there is no Makefile.
Packit 664db3
#
Packit 664db3
# This script is compatible with the BSD install script, but was written
Packit 664db3
# from scratch.
Packit 664db3
Packit 664db3
nl='
Packit 664db3
'
Packit 664db3
IFS=" ""	$nl"
Packit 664db3
Packit 664db3
# set DOITPROG to echo to test this script
Packit 664db3
Packit 664db3
# Don't use :- since 4.3BSD and earlier shells don't like it.
Packit 664db3
doit=${DOITPROG-}
Packit 664db3
if test -z "$doit"; then
Packit 664db3
  doit_exec=exec
Packit 664db3
else
Packit 664db3
  doit_exec=$doit
Packit 664db3
fi
Packit 664db3
Packit 664db3
# Put in absolute file names if you don't have them in your path;
Packit 664db3
# or use environment vars.
Packit 664db3
Packit 664db3
chgrpprog=${CHGRPPROG-chgrp}
Packit 664db3
chmodprog=${CHMODPROG-chmod}
Packit 664db3
chownprog=${CHOWNPROG-chown}
Packit 664db3
cmpprog=${CMPPROG-cmp}
Packit 664db3
cpprog=${CPPROG-cp}
Packit 664db3
mkdirprog=${MKDIRPROG-mkdir}
Packit 664db3
mvprog=${MVPROG-mv}
Packit 664db3
rmprog=${RMPROG-rm}
Packit 664db3
stripprog=${STRIPPROG-strip}
Packit 664db3
Packit 664db3
posix_glob='?'
Packit 664db3
initialize_posix_glob='
Packit 664db3
  test "$posix_glob" != "?" || {
Packit 664db3
    if (set -f) 2>/dev/null; then
Packit 664db3
      posix_glob=
Packit 664db3
    else
Packit 664db3
      posix_glob=:
Packit 664db3
    fi
Packit 664db3
  }
Packit 664db3
'
Packit 664db3
Packit 664db3
posix_mkdir=
Packit 664db3
Packit 664db3
# Desired mode of installed file.
Packit 664db3
mode=0755
Packit 664db3
Packit 664db3
chgrpcmd=
Packit 664db3
chmodcmd=$chmodprog
Packit 664db3
chowncmd=
Packit 664db3
mvcmd=$mvprog
Packit 664db3
rmcmd="$rmprog -f"
Packit 664db3
stripcmd=
Packit 664db3
Packit 664db3
src=
Packit 664db3
dst=
Packit 664db3
dir_arg=
Packit 664db3
dst_arg=
Packit 664db3
Packit 664db3
copy_on_change=false
Packit 664db3
no_target_directory=
Packit 664db3
Packit 664db3
usage="\
Packit 664db3
Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
Packit 664db3
   or: $0 [OPTION]... SRCFILES... DIRECTORY
Packit 664db3
   or: $0 [OPTION]... -t DIRECTORY SRCFILES...
Packit 664db3
   or: $0 [OPTION]... -d DIRECTORIES...
Packit 664db3
Packit 664db3
In the 1st form, copy SRCFILE to DSTFILE.
Packit 664db3
In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
Packit 664db3
In the 4th, create DIRECTORIES.
Packit 664db3
Packit 664db3
Options:
Packit 664db3
     --help     display this help and exit.
Packit 664db3
     --version  display version info and exit.
Packit 664db3
Packit 664db3
  -c            (ignored)
Packit 664db3
  -C            install only if different (preserve the last data modification time)
Packit 664db3
  -d            create directories instead of installing files.
Packit 664db3
  -g GROUP      $chgrpprog installed files to GROUP.
Packit 664db3
  -m MODE       $chmodprog installed files to MODE.
Packit 664db3
  -o USER       $chownprog installed files to USER.
Packit 664db3
  -s            $stripprog installed files.
Packit 664db3
  -t DIRECTORY  install into DIRECTORY.
Packit 664db3
  -T            report an error if DSTFILE is a directory.
Packit 664db3
Packit 664db3
Environment variables override the default commands:
Packit 664db3
  CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
Packit 664db3
  RMPROG STRIPPROG
Packit 664db3
"
Packit 664db3
Packit 664db3
while test $# -ne 0; do
Packit 664db3
  case $1 in
Packit 664db3
    -c) ;;
Packit 664db3
Packit 664db3
    -C) copy_on_change=true;;
Packit 664db3
Packit 664db3
    -d) dir_arg=true;;
Packit 664db3
Packit 664db3
    -g) chgrpcmd="$chgrpprog $2"
Packit 664db3
	shift;;
Packit 664db3
Packit 664db3
    --help) echo "$usage"; exit $?;;
Packit 664db3
Packit 664db3
    -m) mode=$2
Packit 664db3
	case $mode in
Packit 664db3
	  *' '* | *'	'* | *'
Packit 664db3
'*	  | *'*'* | *'?'* | *'['*)
Packit 664db3
	    echo "$0: invalid mode: $mode" >&2
Packit 664db3
	    exit 1;;
Packit 664db3
	esac
Packit 664db3
	shift;;
Packit 664db3
Packit 664db3
    -o) chowncmd="$chownprog $2"
Packit 664db3
	shift;;
Packit 664db3
Packit 664db3
    -s) stripcmd=$stripprog;;
Packit 664db3
Packit 664db3
    -t) dst_arg=$2
Packit 664db3
	shift;;
Packit 664db3
Packit 664db3
    -T) no_target_directory=true;;
Packit 664db3
Packit 664db3
    --version) echo "$0 $scriptversion"; exit $?;;
Packit 664db3
Packit 664db3
    --)	shift
Packit 664db3
	break;;
Packit 664db3
Packit 664db3
    -*)	echo "$0: invalid option: $1" >&2
Packit 664db3
	exit 1;;
Packit 664db3
Packit 664db3
    *)  break;;
Packit 664db3
  esac
Packit 664db3
  shift
Packit 664db3
done
Packit 664db3
Packit 664db3
if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
Packit 664db3
  # When -d is used, all remaining arguments are directories to create.
Packit 664db3
  # When -t is used, the destination is already specified.
Packit 664db3
  # Otherwise, the last argument is the destination.  Remove it from $@.
Packit 664db3
  for arg
Packit 664db3
  do
Packit 664db3
    if test -n "$dst_arg"; then
Packit 664db3
      # $@ is not empty: it contains at least $arg.
Packit 664db3
      set fnord "$@" "$dst_arg"
Packit 664db3
      shift # fnord
Packit 664db3
    fi
Packit 664db3
    shift # arg
Packit 664db3
    dst_arg=$arg
Packit 664db3
  done
Packit 664db3
fi
Packit 664db3
Packit 664db3
if test $# -eq 0; then
Packit 664db3
  if test -z "$dir_arg"; then
Packit 664db3
    echo "$0: no input file specified." >&2
Packit 664db3
    exit 1
Packit 664db3
  fi
Packit 664db3
  # It's OK to call `install-sh -d' without argument.
Packit 664db3
  # This can happen when creating conditional directories.
Packit 664db3
  exit 0
Packit 664db3
fi
Packit 664db3
Packit 664db3
if test -z "$dir_arg"; then
Packit 664db3
  trap '(exit $?); exit' 1 2 13 15
Packit 664db3
Packit 664db3
  # Set umask so as not to create temps with too-generous modes.
Packit 664db3
  # However, 'strip' requires both read and write access to temps.
Packit 664db3
  case $mode in
Packit 664db3
    # Optimize common cases.
Packit 664db3
    *644) cp_umask=133;;
Packit 664db3
    *755) cp_umask=22;;
Packit 664db3
Packit 664db3
    *[0-7])
Packit 664db3
      if test -z "$stripcmd"; then
Packit 664db3
	u_plus_rw=
Packit 664db3
      else
Packit 664db3
	u_plus_rw='% 200'
Packit 664db3
      fi
Packit 664db3
      cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
Packit 664db3
    *)
Packit 664db3
      if test -z "$stripcmd"; then
Packit 664db3
	u_plus_rw=
Packit 664db3
      else
Packit 664db3
	u_plus_rw=,u+rw
Packit 664db3
      fi
Packit 664db3
      cp_umask=$mode$u_plus_rw;;
Packit 664db3
  esac
Packit 664db3
fi
Packit 664db3
Packit 664db3
for src
Packit 664db3
do
Packit 664db3
  # Protect names starting with `-'.
Packit 664db3
  case $src in
Packit 664db3
    -*) src=./$src;;
Packit 664db3
  esac
Packit 664db3
Packit 664db3
  if test -n "$dir_arg"; then
Packit 664db3
    dst=$src
Packit 664db3
    dstdir=$dst
Packit 664db3
    test -d "$dstdir"
Packit 664db3
    dstdir_status=$?
Packit 664db3
  else
Packit 664db3
Packit 664db3
    # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
Packit 664db3
    # might cause directories to be created, which would be especially bad
Packit 664db3
    # if $src (and thus $dsttmp) contains '*'.
Packit 664db3
    if test ! -f "$src" && test ! -d "$src"; then
Packit 664db3
      echo "$0: $src does not exist." >&2
Packit 664db3
      exit 1
Packit 664db3
    fi
Packit 664db3
Packit 664db3
    if test -z "$dst_arg"; then
Packit 664db3
      echo "$0: no destination specified." >&2
Packit 664db3
      exit 1
Packit 664db3
    fi
Packit 664db3
Packit 664db3
    dst=$dst_arg
Packit 664db3
    # Protect names starting with `-'.
Packit 664db3
    case $dst in
Packit 664db3
      -*) dst=./$dst;;
Packit 664db3
    esac
Packit 664db3
Packit 664db3
    # If destination is a directory, append the input filename; won't work
Packit 664db3
    # if double slashes aren't ignored.
Packit 664db3
    if test -d "$dst"; then
Packit 664db3
      if test -n "$no_target_directory"; then
Packit 664db3
	echo "$0: $dst_arg: Is a directory" >&2
Packit 664db3
	exit 1
Packit 664db3
      fi
Packit 664db3
      dstdir=$dst
Packit 664db3
      dst=$dstdir/`basename "$src"`
Packit 664db3
      dstdir_status=0
Packit 664db3
    else
Packit 664db3
      # Prefer dirname, but fall back on a substitute if dirname fails.
Packit 664db3
      dstdir=`
Packit 664db3
	(dirname "$dst") 2>/dev/null ||
Packit 664db3
	expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
Packit 664db3
	     X"$dst" : 'X\(//\)[^/]' \| \
Packit 664db3
	     X"$dst" : 'X\(//\)$' \| \
Packit 664db3
	     X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
Packit 664db3
	echo X"$dst" |
Packit 664db3
	    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
Packit 664db3
		   s//\1/
Packit 664db3
		   q
Packit 664db3
		 }
Packit 664db3
		 /^X\(\/\/\)[^/].*/{
Packit 664db3
		   s//\1/
Packit 664db3
		   q
Packit 664db3
		 }
Packit 664db3
		 /^X\(\/\/\)$/{
Packit 664db3
		   s//\1/
Packit 664db3
		   q
Packit 664db3
		 }
Packit 664db3
		 /^X\(\/\).*/{
Packit 664db3
		   s//\1/
Packit 664db3
		   q
Packit 664db3
		 }
Packit 664db3
		 s/.*/./; q'
Packit 664db3
      `
Packit 664db3
Packit 664db3
      test -d "$dstdir"
Packit 664db3
      dstdir_status=$?
Packit 664db3
    fi
Packit 664db3
  fi
Packit 664db3
Packit 664db3
  obsolete_mkdir_used=false
Packit 664db3
Packit 664db3
  if test $dstdir_status != 0; then
Packit 664db3
    case $posix_mkdir in
Packit 664db3
      '')
Packit 664db3
	# Create intermediate dirs using mode 755 as modified by the umask.
Packit 664db3
	# This is like FreeBSD 'install' as of 1997-10-28.
Packit 664db3
	umask=`umask`
Packit 664db3
	case $stripcmd.$umask in
Packit 664db3
	  # Optimize common cases.
Packit 664db3
	  *[2367][2367]) mkdir_umask=$umask;;
Packit 664db3
	  .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
Packit 664db3
Packit 664db3
	  *[0-7])
Packit 664db3
	    mkdir_umask=`expr $umask + 22 \
Packit 664db3
	      - $umask % 100 % 40 + $umask % 20 \
Packit 664db3
	      - $umask % 10 % 4 + $umask % 2
Packit 664db3
	    `;;
Packit 664db3
	  *) mkdir_umask=$umask,go-w;;
Packit 664db3
	esac
Packit 664db3
Packit 664db3
	# With -d, create the new directory with the user-specified mode.
Packit 664db3
	# Otherwise, rely on $mkdir_umask.
Packit 664db3
	if test -n "$dir_arg"; then
Packit 664db3
	  mkdir_mode=-m$mode
Packit 664db3
	else
Packit 664db3
	  mkdir_mode=
Packit 664db3
	fi
Packit 664db3
Packit 664db3
	posix_mkdir=false
Packit 664db3
	case $umask in
Packit 664db3
	  *[123567][0-7][0-7])
Packit 664db3
	    # POSIX mkdir -p sets u+wx bits regardless of umask, which
Packit 664db3
	    # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
Packit 664db3
	    ;;
Packit 664db3
	  *)
Packit 664db3
	    tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
Packit 664db3
	    trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
Packit 664db3
Packit 664db3
	    if (umask $mkdir_umask &&
Packit 664db3
		exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
Packit 664db3
	    then
Packit 664db3
	      if test -z "$dir_arg" || {
Packit 664db3
		   # Check for POSIX incompatibilities with -m.
Packit 664db3
		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
Packit 664db3
		   # other-writeable bit of parent directory when it shouldn't.
Packit 664db3
		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
Packit 664db3
		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
Packit 664db3
		   case $ls_ld_tmpdir in
Packit 664db3
		     d????-?r-*) different_mode=700;;
Packit 664db3
		     d????-?--*) different_mode=755;;
Packit 664db3
		     *) false;;
Packit 664db3
		   esac &&
Packit 664db3
		   $mkdirprog -m$different_mode -p -- "$tmpdir" && {
Packit 664db3
		     ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
Packit 664db3
		     test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
Packit 664db3
		   }
Packit 664db3
		 }
Packit 664db3
	      then posix_mkdir=:
Packit 664db3
	      fi
Packit 664db3
	      rmdir "$tmpdir/d" "$tmpdir"
Packit 664db3
	    else
Packit 664db3
	      # Remove any dirs left behind by ancient mkdir implementations.
Packit 664db3
	      rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
Packit 664db3
	    fi
Packit 664db3
	    trap '' 0;;
Packit 664db3
	esac;;
Packit 664db3
    esac
Packit 664db3
Packit 664db3
    if
Packit 664db3
      $posix_mkdir && (
Packit 664db3
	umask $mkdir_umask &&
Packit 664db3
	$doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
Packit 664db3
      )
Packit 664db3
    then :
Packit 664db3
    else
Packit 664db3
Packit 664db3
      # The umask is ridiculous, or mkdir does not conform to POSIX,
Packit 664db3
      # or it failed possibly due to a race condition.  Create the
Packit 664db3
      # directory the slow way, step by step, checking for races as we go.
Packit 664db3
Packit 664db3
      case $dstdir in
Packit 664db3
	/*) prefix='/';;
Packit 664db3
	-*) prefix='./';;
Packit 664db3
	*)  prefix='';;
Packit 664db3
      esac
Packit 664db3
Packit 664db3
      eval "$initialize_posix_glob"
Packit 664db3
Packit 664db3
      oIFS=$IFS
Packit 664db3
      IFS=/
Packit 664db3
      $posix_glob set -f
Packit 664db3
      set fnord $dstdir
Packit 664db3
      shift
Packit 664db3
      $posix_glob set +f
Packit 664db3
      IFS=$oIFS
Packit 664db3
Packit 664db3
      prefixes=
Packit 664db3
Packit 664db3
      for d
Packit 664db3
      do
Packit 664db3
	test -z "$d" && continue
Packit 664db3
Packit 664db3
	prefix=$prefix$d
Packit 664db3
	if test -d "$prefix"; then
Packit 664db3
	  prefixes=
Packit 664db3
	else
Packit 664db3
	  if $posix_mkdir; then
Packit 664db3
	    (umask=$mkdir_umask &&
Packit 664db3
	     $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
Packit 664db3
	    # Don't fail if two instances are running concurrently.
Packit 664db3
	    test -d "$prefix" || exit 1
Packit 664db3
	  else
Packit 664db3
	    case $prefix in
Packit 664db3
	      *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
Packit 664db3
	      *) qprefix=$prefix;;
Packit 664db3
	    esac
Packit 664db3
	    prefixes="$prefixes '$qprefix'"
Packit 664db3
	  fi
Packit 664db3
	fi
Packit 664db3
	prefix=$prefix/
Packit 664db3
      done
Packit 664db3
Packit 664db3
      if test -n "$prefixes"; then
Packit 664db3
	# Don't fail if two instances are running concurrently.
Packit 664db3
	(umask $mkdir_umask &&
Packit 664db3
	 eval "\$doit_exec \$mkdirprog $prefixes") ||
Packit 664db3
	  test -d "$dstdir" || exit 1
Packit 664db3
	obsolete_mkdir_used=true
Packit 664db3
      fi
Packit 664db3
    fi
Packit 664db3
  fi
Packit 664db3
Packit 664db3
  if test -n "$dir_arg"; then
Packit 664db3
    { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
Packit 664db3
    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
Packit 664db3
    { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
Packit 664db3
      test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
Packit 664db3
  else
Packit 664db3
Packit 664db3
    # Make a couple of temp file names in the proper directory.
Packit 664db3
    dsttmp=$dstdir/_inst.$$_
Packit 664db3
    rmtmp=$dstdir/_rm.$$_
Packit 664db3
Packit 664db3
    # Trap to clean up those temp files at exit.
Packit 664db3
    trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
Packit 664db3
Packit 664db3
    # Copy the file name to the temp name.
Packit 664db3
    (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
Packit 664db3
Packit 664db3
    # and set any options; do chmod last to preserve setuid bits.
Packit 664db3
    #
Packit 664db3
    # If any of these fail, we abort the whole thing.  If we want to
Packit 664db3
    # ignore errors from any of these, just make sure not to ignore
Packit 664db3
    # errors from the above "$doit $cpprog $src $dsttmp" command.
Packit 664db3
    #
Packit 664db3
    { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
Packit 664db3
    { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
Packit 664db3
    { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
Packit 664db3
    { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
Packit 664db3
Packit 664db3
    # If -C, don't bother to copy if it wouldn't change the file.
Packit 664db3
    if $copy_on_change &&
Packit 664db3
       old=`LC_ALL=C ls -dlL "$dst"	2>/dev/null` &&
Packit 664db3
       new=`LC_ALL=C ls -dlL "$dsttmp"	2>/dev/null` &&
Packit 664db3
Packit 664db3
       eval "$initialize_posix_glob" &&
Packit 664db3
       $posix_glob set -f &&
Packit 664db3
       set X $old && old=:$2:$4:$5:$6 &&
Packit 664db3
       set X $new && new=:$2:$4:$5:$6 &&
Packit 664db3
       $posix_glob set +f &&
Packit 664db3
Packit 664db3
       test "$old" = "$new" &&
Packit 664db3
       $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
Packit 664db3
    then
Packit 664db3
      rm -f "$dsttmp"
Packit 664db3
    else
Packit 664db3
      # Rename the file to the real destination.
Packit 664db3
      $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
Packit 664db3
Packit 664db3
      # The rename failed, perhaps because mv can't rename something else
Packit 664db3
      # to itself, or perhaps because mv is so ancient that it does not
Packit 664db3
      # support -f.
Packit 664db3
      {
Packit 664db3
	# Now remove or move aside any old file at destination location.
Packit 664db3
	# We try this two ways since rm can't unlink itself on some
Packit 664db3
	# systems and the destination file might be busy for other
Packit 664db3
	# reasons.  In this case, the final cleanup might fail but the new
Packit 664db3
	# file should still install successfully.
Packit 664db3
	{
Packit 664db3
	  test ! -f "$dst" ||
Packit 664db3
	  $doit $rmcmd -f "$dst" 2>/dev/null ||
Packit 664db3
	  { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
Packit 664db3
	    { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
Packit 664db3
	  } ||
Packit 664db3
	  { echo "$0: cannot unlink or rename $dst" >&2
Packit 664db3
	    (exit 1); exit 1
Packit 664db3
	  }
Packit 664db3
	} &&
Packit 664db3
Packit 664db3
	# Now rename the file to the real destination.
Packit 664db3
	$doit $mvcmd "$dsttmp" "$dst"
Packit 664db3
      }
Packit 664db3
    fi || exit 1
Packit 664db3
Packit 664db3
    trap '' 0
Packit 664db3
  fi
Packit 664db3
done
Packit 664db3
Packit 664db3
# Local variables:
Packit 664db3
# eval: (add-hook 'write-file-hooks 'time-stamp)
Packit 664db3
# time-stamp-start: "scriptversion="
Packit 664db3
# time-stamp-format: "%:y-%02m-%02d.%02H"
Packit 664db3
# time-stamp-end: "$"
Packit 664db3
# End: