shell script which send an alert if a particular script scheduled in cron is not triggered.
Did you check with cron logs? $ tail /var/log/cron
What is the exit code of your script ? (pseudo code below) 0 0 * * * (./script_waits_4hrs_then_fails.sh ) && ( mail -s "Success" ) || ( mail -s "Failed")
May be modify the script to be more proactive and report to you before it decide to fail. ( Provide the script, we can suggest on certain "pro-activeness" for script. )
If your don't want to modify the script then write another script to monitor the file and logs after the file downloaded is processed.
Around the lines
Check every X mins interval if file is available at "upstream" ? in four hours of time.
If file appears then check if "script" writes any logs etc. If there is some activity, we have file and it started processed.
Another way is to check for any process that the script is suppose to call example database call or other connections. Any binaries etc ..
Hope you get your answer and share your solution.
---------- Post updated at 08:27 AM ---------- Previous update was at 08:21 AM ----------
Also if your script does give out good output and if there are not many in cron jobs. Many be adding MAIL to will get you output of script. Make sure Mail server setup is good.
Code:
MAILTO=me@domain.com
Last edited by rbatte1; 01-09-2017 at 09:35 AM..
Reason: Converted textual numbered lists into formatted numbered lists
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friends
and I can validate whether to run the shell has input parameters m event date, I occasionally happen something like this does not work
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Discussion started by: tricampeon81
2 Replies
LEARN ABOUT REDHAT
crond
CRON(8) System Manager's Manual CRON(8)NAME
cron - daemon to execute scheduled commands (Vixie Cron)
SYNOPSIS
cron
DESCRIPTION
Cron should be started from /etc/rc or /etc/rc.local. It will return immediately, so you don't need to start it with '&'.
Cron searches /var/spool/cron for crontab files which are named after accounts in /etc/passwd; crontabs found are loaded into memory. Cron
also searches for /etc/crontab and the files in the /etc/cron.d/ directory, which are in a different format (see crontab(5)). Cron then
wakes up every minute, examining all stored crontabs, checking each command to see if it should be run in the current minute. When execut-
ing commands, any output is mailed to the owner of the crontab (or to the user named in the MAILTO environment variable in the crontab, if
such exists).
Additionally, cron checks each minute to see if its spool directory's modtime (or the modtime on /etc/crontab) has changed, and if it has,
cron will then examine the modtime on all crontabs and reload those which have changed. Thus cron need not be restarted whenever a crontab
file is modified. Note that the Crontab(1) command updates the modtime of the spool directory whenever it changes a crontab.
SEE ALSO crontab(1), crontab(5)AUTHOR
Paul Vixie <paul@vix.com>
4th Berkeley Distribution 20 December 1993 CRON(8)