Paste Description for bash to keep a script looping
Depending on the exit() code, it will either restart, pause, then restart, or exit completely.
- bash to keep a script looping
- Sunday, February 8th, 2009 at 2:26:32pm MST
- #!/bin/bash
- # a shell script that keeps looping until an exit code is given
- # if it's a 0, immediatly restart
- # if it's an error, pause, then restart
- # and one particular code, exit cleanly.
- ## Run the PHP script. What it returns decides on what happens next
- nice php -f cli-beanstalk-worker.php
- ERR=$?
- ## Possibilities
- # 0 - unplanned restart (aka exit;)
- # 1-97 - unplanned restart
- # 98 - planned restart
- # 99 - planned stop, exit.
- # 100 - unplanned restart
- if [ $ERR -eq 97 ]
- then
- # a planned pause, then restart
- echo "PLANNED_PAUSE - wait 2";
- sleep 2;
- exec $0;
- fi
- if [ $ERR -eq 98 ]
- then
- # a planned restart
- echo "PLANNED_RESTART";
- exec $0;
- fi
- if [ $ERR -eq 99 ]
- then
- # planned complete exit
- echo "PLANNED_SHUTDOWN";
- #echo "sleep for a couple of secs first"
- #sleep 2
- #echo DONE, $$
- exit 0;
- fi
- # unplanned exit, pause, and restart
- echo "unplanned restart: err:" $ERR;
- echo "sleeping for (2) secs. - normally 10?"
- sleep 2
- exec $0
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