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- #!/bin/sh
- # nohup -- run a command immume to hangups, with output to a non-tty
- # Copyright (C) 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- # Written by David MacKenzie <djm@gnu.ai.mit.edu>.
-
- # Make sure we get GNU nice, if possible; also allow
- # it to be somewhere else in PATH if not installed yet.
- PATH=/usr/bin:$PATH
-
- usage="Usage: $0 COMMAND [ARG]...
- or: $0 OPTION"
-
- usage_try="
- Try \`$0 --help' for more information."
-
- usage_help="
- --help display this help and exit
- --version output version information and exit"
-
- if [ $# -eq 0 ]; then
- echo >&2 "$usage"
- echo >&2 "$usage_try"
- exit 1
- fi
-
- case $# in
- 1 )
- case "z${1}" in
- z--help )
- echo "$usage"; echo "$usage_help"; exit 0 ;;
- z--version )
- echo "nohup - GNU sh-utils 1.12"; exit 0 ;;
- * ) ;;
- esac
- ;;
- * ) ;;
- esac
-
- trap "" 1
- oldmask=`umask`; umask 077
- # Only redirect the output if the user didn't already do it.
- if [ -t 1 ]; then
- # If we cannot write to the current directory, use the home directory.
- if cat /dev/null >> nohup.out; then
- echo "nohup: appending output to \`nohup.out'" 2>&1
- umask $oldmask
- exec nice -5 -- "$@" >> nohup.out 2>&1
- else
- cat /dev/null >> $HOME/nohup.out
- echo "nohup: appending output to \`$HOME/nohup.out'" 2>&1
- umask $oldmask
- exec nice -5 -- "$@" >> $HOME/nohup.out 2>&1
- fi
- else
- umask $oldmask
- exec nice -5 -- "$@"
- fi
-