CODEWITHSUNDEEP
cronkill-processsingle-instance
Pankaj Singhal
Pankaj Singhal

Reputation: 16053

single instance of cron - kill old execution before starting new one

The requirement is to run a cron on an hourly/daily basis.

But sometimes, the cron takes too long to complete before the subsequent execution.

So, when the subsequent execution starts, it shouldn't run 2 parallel jobs.

Instead, it is supposed to kill the already executing job & start a new one.

I tried the following but nothing worked.

  1. pkill & run my script in cron - this, this & this
  2. pgrep & kill instead of pkill in above solution - a one-liner bash using && & ;
  3. run-one & run-this-one also in it.

What's the best way to do it?

Upvotes: 0

Views: 370

Answers (1)

Pankaj Singhal
Pankaj Singhal

Reputation: 16053

timeout

* * * * * /usr/bin/timeout 59 /home/script.sh

The above cron runs every minute but the execution terminates after 59 seconds(if it has not finished).

Upvotes: 0

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