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An example of unicorn init script for Ubuntu
#!/bin/sh
### BEGIN INIT INFO
# Provides: unicorn
# Required-Start: $local_fs $remote_fs $network $syslog
# Required-Stop: $local_fs $remote_fs $network $syslog
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: starts the unicorn web server
# Description: starts unicorn
### END INIT INFO
. /lib/lsb/init-functions
test $DEBIAN_SCRIPT_DEBUG && set -v -x
USER=tualatrix
WEBSITE=dev.imtx.me
DAEMON=`which unicorn`
APP_DIR=/home/$USER/public_html/$WEBSITE/current/
DAEMON_OPTS="-c $APP_DIR/config/unicorn.rb -E production -D"
NAME=unicorn
DESC="Unicorn app for $USER"
PID=$APP_DIR/pids/unicorn.$WEBSITE.pid
test -x $DAEMON || exit 0
case "$1" in
start)
log_action_begin_msg "Starting $DESC"
if test -e $PID ; then
log_warning_msg " $DESC has already started."
exit 1
fi
CD_TO_APP_DIR="cd /home/$USER/public_html/$WEBSITE/current"
START_DAEMON_PROCESS="$DAEMON $DAEMON_OPTS"
if [ `whoami` = root ]; then
su - $USER -c "$CD_TO_APP_DIR > /dev/null 2>&1 && $START_DAEMON_PROCESS"
else
$CD_TO_APP_DIR && $START_DAEMON_PROCESS
fi
log_daemon_msg "$DESC is started."
;;
stop)
log_action_begin_msg "Stopping $DESC"
if test -e "$PID" ; then
kill -QUIT `cat $PID`
log_daemon_msg " $DESC has been stopped"
else
log_warning_msg " No $DESC is running."
fi
;;
restart)
log_action_begin_msg "Restarting $DESC"
if test -e "$PID" ; then
kill -USR2 `cat $PID`
log_daemon_msg " $DESC has been restart"
else
log_warning_msg " No $DESC is running."
fi
;;
reload)
log_action_begin_msg "Reloading $DESC"
if test -e "$PID" ; then
kill -HUP `cat $PID`
log_daemon_msg " $DESC has been reload"
else
log_warning_msg " No $DESC is running."
fi
;;
*)
echo "Usage: $NAME {start|stop|restart|reload}" >&2
exit 1
;;
esac
exit 0
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