systemd: How to start as different user?

[Reindl Harald]

how to start a program as service with a defined user?
one example below and there are many progams which can
run headless with a restricted user - if find no option
to do this in systemd

BTW:
the name "sytemd" makes your life hard googling for informations
since google seems to think the "d" is a typo

#!/bin/bash
### BEGIN INIT INFO
# Provides: ffserver
# Default-Start:
# Default-Stop: 0 1 2 3 4 6
# Short-Description: streaming server
# Description: streaming server
### END INIT INFO
# chkconfig: 345 84 84

# Service-Name
SERVICE="ffserver"
USER_ACCOUNT="ffserver"

# Source function library.
. /etc/init.d/functions


[ -f /usr/bin/$SERVICE ] || exit 0

# Source config
if [ -f /etc/sysconfig/$SERVICE ] ; then
 . /etc/sysconfig/$SERVICE
else
 OPTIONS=""
fi

RETVAL=0

start() {
 if [ -n "`/sbin/pidof $SERVICE`" ]; then
  RETVAL=0
  action $"Starte $SERVICE" /bin/false
  return $RETVAL
 fi
 daemon --user $USER_ACCOUNT $SERVICE $OPTIONS > /dev/null 2> /dev/null
 RETVAL=$?
 PROCESS_ID=`/sbin/pidof $SERVICE`
 if [ "$PROCESS_ID" != "" ]; then
  PROCESS_ID="(PID: $PROCESS_ID)"
 fi
 action $"Starte $SERVICE $PROCESS_ID" /bin/true
 if [ -n "`/sbin/pidof $SERVICE`" ]; then
  touch /var/lock/subsys/$SERVICE
  return $RETVAL
 else
  RETVAL=127
  return $RETVAL
 fi
}

stop() {
 if [ -z "`/sbin/pidof $SERVICE`" ]; then
  RETVAL=0
  action $"Beende $SERVICE" /bin/false
  return $RETVAL
 fi
 PROCESS_ID=`/sbin/pidof $SERVICE`
 if [ "$PROCESS_ID" != "" ]; then
  PROCESS_ID="(PID: $PROCESS_ID)"
 fi
 killproc $SERVICE
 RETVAL=$?
 echo "Beende $SERVICE $PROCESS_ID"
 [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$SERVICE
 return $RETVAL
}

rhstatus() {
 status $SERVICE
}

restart() {
 stop
 start
}

case "$1" in
  start)
   start
 ;;
  stop)
   stop
 ;;
  status)
   rhstatus
 ;;
  restart|reload)
   restart
 ;;
  condrestart)
   [ -f /var/lock/subsys/$SERVICE ] && restart || :
 ;;
  *)
 echo $"Usage: $0 {start|stop|status|restart|condrestart}"
 exit 1
esac

exit $?


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