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|
#!/bin/sh
tmout=120
cmd=
while getopts c:t: opt; do
case "$opt" in
c) cmd="$OPTARG" ;;
t) tmout="$OPTARG" ;;
esac
done
nargs=$(expr $OPTIND - 1)
shift $nargs
even_args=$(expr $# % 2)
if [ $# -lt 2 -o $even_args -ne 0 ]; then
echo "args: [-t timeout] [-c command] hostname1 port1 hostname2 port2 ..." >&2
exit 1
fi
while [ $# -ge 2 ]; do
export host=$1
export port=$2
shift
shift
echo "Waiting for $host port $port..."
timeout $tmout sh -c 'until nc -vz "$host" "$port"; do echo -n ".";
sleep 1; done'
rc=$?
if [ $rc != 0 ]; then
echo "$host port $port cannot be reached"
exit $rc
fi
done
$cmd
exit 0
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