Shell Programming and Scripting

I am working on a script to check a log for an error, if it finds the error it sends to a file then emails an alert. My delima is, once the error happens it will be true all day and would report the same error through out the day. The script will be run from crontab. Si I think I need something that checks the time of the error also.

logfile format is servicename_PID.log-TodaysDate example.......
PRservice_921.log-2008.04.29
PRservice_1021.log-2008.04.29
PRservice_1091.log-2008.04.29
PRservice_1142.log-2008.04.29

Here is the script...

Code:

#!/bin/ksh

aday=$(date '+%Y.%m.%d')
logdir=/usr/PR/logs/
logname=PRservice*$aday
data=/usr/PR/tools/pscdata
mailto='admin@mybox.com'

### Step to check for error(s) and setup data file for alerting 
cd $logdir
grep "rollback failed" PRservice*$aday > $data

if [ -s "$data" ]; then
   echo "errors detected"
   echo "PR errors have been detected, please check the processes" >> $data
   mail $mailto < $data
else
   echo "no error detected"
fi

Is there some date+time in the line with "rollback failed"?

Write the date+time of the last detected and sent error to a file like /var/lib/myscripts/alertscript.last. In every later run the script can compare, whether it's found new or older, known errors.

I've done stuff like that.

Create a secondary log to indicate that an error notification was already sent, or that there is currently no error.

When you find an error, first check the contents of the secondary log to determine if this is a new error or not. If so, send the email and update the secondary log. If it's not new, do nothing.

If there is NOT an error, update the secondary log to clear out the prior error so the next error can be processed properly.

Alternatively, use the secondary log to record when and which type of email went out, so you can send a reminder and/or escalate the urgency and/or add recipients if the error doesn't get fixed.