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Top Forums Shell Programming and Scripting Automatically Rerun a script based on previous execution output Post 302329066 by cfajohnson on Thursday 25th of June 2009 08:52:00 PM
Old 06-25-2009
Quote:
Originally Posted by forumthreads
I have a shell script called "updatevs" that is scheduled to run at 6.00 am everyday via cronjob. The cronjob will execute this script and output to a log file. The functionality of this script is to read the database and run a set of commands. This script is generally successful but some times due to network outage or Database being down it fails.

Only in case of a failure i would like to rerun the script every 20 mins for the next 2 hours, if still not successful after 2 hours i would like an email to be triggered to address "xxxxx@abc.com"

There may be several ways to solve this case however I was thinking of writing a small script called "checklog" which reads the log file and searching for the obevious words like "ERROR", when found "Checklog" script will rerun "updatevs" script. I don't think this is the solution as i can't see a way of making this recurring.

Code:
n=0
while ! updatevs
do
  [ $n -le 6 ] && sleep 1200
  if [ $n -gt 6 ]
  then
     echo whatever | mail -s "updatevs failed" xxxxx@abc.com
     exit 1
  fi
  n=$(( $n + 1 ))
done

 

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service(8)						      System Manager's Manual							service(8)

NAME
service - run a System V init script SYNOPSIS
service SCRIPT COMMAND [OPTIONS] service --status-all service --help | -h | --version DESCRIPTION
service runs a System V init script in as predictable environment as possible, removing most environment variables and with current working directory set to /. The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT. The supported values of COMMAND depend on the invoked script, service passes COMMAND and OPTIONS it to the init script unmodified. All scripts should support at least the start and stop commands. As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start command. service --status-all runs all init scripts, in alphabetical order, with the status command. If the init script file does not exist, the script tries to use legacy actions. If there is no suitable legacy action found and COMMAND is one of actions specified in LSB Core Specification, input is redirected to the systemctl. Otherwise the command fails with return code 2. FILES
/etc/init.d The directory containing System V init scripts. ENVIRONMENT
LANG, TERM The only environment variables passed to the init scripts. SEE ALSO
chkconfig(8), ntsysv(8), systemd(1), systemctl(8), systemd.service(5) Jan 2006 service(8)
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