From: Nicolas Ross <rossnick-lists@xxxxxxxxxxx>
> >> > while true; do
> >> > your stuff
> >> > sleep 60
> >> > done;
> >>
> >> Sure, but you also need to start the loop and make sure it doesn't die.
> > Put in /etc/inittab
> > ms:2345:respawn:/path/to/my/loop_script
> > (where "ms" is unique).
> > If the loop dies then init will restart it for you.
> I tought of that, and I will be needing something like this, since I have
> some services that need to be restarted in the event of them dying or being
> killed.
> But I'm not that much confortable scripting a modification of the initab to
> activate / deactivate services on a server-by-server basis.
I usually use a lock file and put an entry in cron (like try to relaunch the
scrip every xxx in case it crashed).
But that means taking care of removing the leftover lock file if the script
crashed...
Something like:
if [ -f "$LOCK_FILE" ]; then
PID=`cat "$LOCK_FILE"`
if [ ! -d "/proc/$PID" ]; then
rm -f "$LOCK_FILE"
if [ -f "$STOP_FILE" ]; then rm -f "$STOP_FILE"; fi
exit 1
fi
exit 1
else
echo $$ > "$LOCK_FILE"
fi
while [ ! -f "$STOP_FILE" ]; do
your stuff
sleep 60
done
rm -f "$STOP_FILE"
rm -f "$LOCK_FILE"
JD
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