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Shell Programming and Scripting

Script to test for scripts running

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Top Forums Shell Programming and Scripting Script to test for scripts running
# 15  
Old 08-18-2008
Cheers.

Im now trying to get it on a 5 min loop. What im trying to do is for my check to run every 5 mins. I had thought if I put a

Code:
sleep 300

betweeen the 'fi' and 'done' but that just creates a 5 min wait before looping back round to check if the next scrippt is running. If I put it after the 'done' it just creates a 5 min wait before ending my script. How should I do this?
# 16  
Old 08-18-2008
It might be better to leave it as-is and run it from cron every five minutes. That way if it ever gets killed (random system flakiness etc, especially likely in situations where you would like this sort of thing to robustly keep on running!) it runs again when the system recovers.
# 17  
Old 08-18-2008
OK, Cheers.

I dont know what Kron is(yet) but will def check it out. In the meantime if you know any good links that you could point me to it would be appreciated.
# 18  
Old 08-18-2008
https://www.unix.com/answers-frequent...n-crontab.html
# 19  
Old 08-19-2008
Code:
#!/sbin/sh -
log() {
    /usr/bin/echo "$1" >> ${LOGFILE}
}
LOGFILE=/var/tmp/Paul/scripts/chk_scripts.log
ps -efa | awk '/[c]hk/ { print (substr($0, 48)) }' |
while read line
do
 if fgrep -x "$line" /var/tmp/Paul/scripts/AllScripts.txt
  then
   log "$line running"
  else
   log "$line not running"
 fi
done

I just realiesd that $line is the relevant line from the ps. This means that an entry will be made in the logs saying a process is not running if there is a precess running that is not in the text file. Also if the text file contains a line that isnt an actual process it is ignored.

Is it possible to switch some code around so that the variable $line is assigned to the fgrep and it is checked against the ps?
# 20  
Old 08-20-2008
I'm not sure I understand your question. If there are processes matching [c]hk which are not in your file then there will be false positives, yes; if you cannot come up with a tighter pattern, maybe you could read AllScripts.txt into the awk script directly.

Code:
ps efa |
awk 'NR==FNR { p[$0] = 1; next }
{ delete p[substr ($0, 48)]; }
END { for (m in p) print m }' AllScripts.txt -

The above will print the lines in AllScripts.txt which do not occur in the ps output (assuming your awk can cope with all the constructs I used).
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