#! /bin/sh FILE=${1:?} IFS=' ' while read COMMAND ARG do echo $COMMAND $ARG >> $FILE case $COMMAND in stop) if [ -n "$STOPCMD" ]; then echo "STOP" $STOPCMD else echo "OK $COMMAND $ARG" fi ;; quit) exit $ARG;; *) echo "OK $COMMAND $ARG" ;; esac done