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- #!/bin/sh
- # nohup -- run a command immume to hangups, with output to a non-tty
- # Copyright (C) 1991, 1997, 1999, 2000, 2002 Free Software Foundation, Inc.
-
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2, or (at your option)
- # any later version.
-
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
-
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software Foundation,
- # Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
- # Written by David MacKenzie <djm@gnu.ai.mit.edu>.
-
- usage="Usage: $0 COMMAND [ARG]...
- or: $0 OPTION"
-
- usage_try="
- Try \`$0 --help' for more information."
-
- usage_help="Run COMMAND, ignoring hangup signals.
-
- --help display this help and exit
- --version output version information and exit
-
- Report bugs to <bug-coreutils@gnu.org>."
-
- if [ $# -eq 0 ]; then
- echo >&2 "$usage"
- echo >&2 "$usage_try"
- exit 127
- fi
-
- fail=0
- case $# in
- 1 )
- case "z${1}" in
- z--help )
- echo "$usage" || fail=127; echo "$usage_help" || fail=127
- exit $fail;;
- z--version )
- echo "nohup (GNU coreutils) 5.0" || fail=127
- exit $fail;;
- * ) ;;
- esac
- ;;
- * ) ;;
- esac
-
- trap "" 1
-
- # Redirect stdout if the user didn't already do it.
- if [ -t 1 ]; then
- oldmask=`umask`; umask 077
- # If we cannot write to the current directory, use the home directory.
- if exec >> nohup.out; then
- echo "nohup: appending output to \`nohup.out'" >&2
- elif exec >> "$HOME/nohup.out"; then
- echo "nohup: appending output to \`$HOME/nohup.out'" >&2
- else
- echo "nohup: cannot append to either \`nohup.out' or \`$HOME/nohup.out'" \
- >&2
- exit 127
- fi
- umask $oldmask
- fi
-
- # Redirect stderr if the user didn't already do it.
- if [ -t 2 ]; then
- exec 2>&1
- fi
-
- exec "$@"
-