Nagios plugin template

No he encontrado por internet nada, asique he copiado y pegado del libro “Pro Nagios 2.0″. Espero que a alguien le sirva (a mi si )
#!/bin/bash
PROGNAME=`basename $0`
PROGPATH=`echo $0 | sed -e 's,[\\/][^\\/][^\\/]*$,,'`

. $PROGPATH/utils.sh

print_usage(){
echo "Usage: $PROGNAME"
}

print_help(){
print_revision $PROGNAME $REVISION
echo ""
print_usage
echo ""
echo "This plugin is a template written in shell script"
echo ""
support
exit 0
}

case "$1" in
--help)
print_help
exit 0
;;
-h)
print_help
exit 0
;;
--version)
print_revision $PROGNAME $REVISION
exit 0
;;
-V)
print_revision $PROGNAME $REVISION
exit 0
;;
*)
testdata=`test -e t1`
status=$?
if test "$1" = "-v" -o "$1" = "--verbose"; then
echo ${testdata}
fi

if test ${status} -eq 1; then
echo "UNKNOWN: The plug-in has failed to function"
exit 3

elif echo ${testdata} | egrep WARNING > /dev/null; then
echo "WARNING: The plug-in returned $status"
exit 1

elif echo ${testdata} | egrep CRITICAL > /dev/null; then
echo "CRITICAL: The plug-in returned $status"
exit 2
else test ${status} -eq 0 ;
echo "OK: The plug-in returned $status"
exit 0
fi
;;
esac