#!/bin/sh
prog=`basename $0`
[ "$1" ] || { cat >&2 <<EOS
  Usage:    $prog {command}
  Example:  $prog update   #run update in the background
  The specified command is run as a background process,
    while the parent process hangs indefinitately
  Signals that terminate the parent are propagated to the child.
EOS
exit 1
}

exec "$@" &
childPID=$!

#ps
#echo $childPID

msg="Finished"
trap "kill -HUP $childPID; msg=\"-Terminated\"" INT QUIT
for signal in HUP TERM; do
  trap "kill -$signal $childPID; exit 2" $signal
done
for signal in USR1 USR2; do
  trap "kill -$signal $childPID" $signal
done

wait $childPID
trap - HUP TERM INT USR1 USR2 QUIT
echo "$msg $1"
sleep 1000d