linux - Script to check for process & restart program if not found -

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• how write bash script restart process if dies? 6 answers

i using check script see if package called cccam running & restart if not..

#!/bin/sh  process=`ps auxwww | grep cccam | grep -v grep | awk '{print $1}'` if [ -z "$process" ]; echo "couldn't find cccam running. restarting server-binary" >> /var/cccamlog/cccam.check  echo && date >>/var/cccamlog/cccam.check /usr/local/bin/cccam -d >> /var/cccamlog/cccam.log &  else echo "cccam still ok!" >> /var/cccamlog/cccam.check  fi  

the script reporting "cccam still ok!"

but not running, if search process using command: ps x |grep -v grep |grep -c cccam, 0 know process not running.

is there other factors should take account might fooling check script thinking cccam running? example, there kind of tag left after program crashes/stops script picking on?

from test get.. error: cccam still runs pid:

if pidof -s cccam > /dev/null;     echo 'it running!' else     echo 'process not found...' fi