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bashcronredhatcron-task

crontab: stop for one hour in month

I have a folder where some files are written upon an event. I have a bash job that monitors the folder, upon recieving new file, it triggers a job to start.

here is what i am doing currently in crontab

@reboot /home/user/start_bash.sh

and in bash

#!/bin/bash

### Set initial time of file
LTIME=`stat -c %Z /home/client/data/*.txt`

while true
do
   ATIME=`stat -c %Z /home/client/data/*.txt`

   if [[ "$ATIME" != "$LTIME" ]]
   then
       Rscript /home/user/scripts/start_script.R

echo "Fertig."
LTIME=$ATIME
   fi
   sleep 5
done

now there is a requirement that we should update and restart the system every first sunday of the month at 2am.

EDIT: I would like to not to start the job from 01:55 and start the job at 2:30 AM every first Sunday of the month.

How can i achive this?

Thanks in advance.

Solution 
  • 55 01 1-7 * 7 /usr/bin/killall /home/user/start_bash.sh

    Run a script to kill the running process at 01:55 in the first 7 days of every month where the day of the month is Sunday

    30 02 1-7 * 7 /home/user/start_bash.sh

    Restart the script at 02:30 in the first 7 days of every month where the day of the month is Sunday