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#!/bin/bash
# wait for a program to run with 0 return status
interval=3; ntimes=20; verbose=""
usage() {
echo "$0 [options] <command args...>"
printf "\t options are: -i <sleep interval_secs> (default %d)\n" $interval
printf "\t -n <integer_number_of_tries> (default %d)\n" $ntimes
printf "\t -v : for verbose reporting\n"
exit 1
} >&2
while [[ "$1" = -* ]] ; do
case $1 in
-i) shift; interval=$1; shift ;;
-n) shift; ntimes=$1; shift ;;
-v) verbose=1 ; shift;;
*) usage;;
esac
done
[ $# -eq 0 ] && usage
n=1
while : ; do
eval "$@"
STATUS=$?
[ -n "$verbose" ] && echo "$n:" 'STATUS =' $STATUS `date`
[ $((++n)) -gt $ntimes -o $STATUS -eq 0 ] && break
sleep $interval
done
exit $STATUS
|
