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submitted 1 month ago* (last edited 1 month ago) by Gonzako@lemmy.world to c/linux@lemmy.ml

Hi!

I've a cronjob that I don't want to be concurrent but it needs to leave a long-running process after it does it's job that I set up with a nohup command.

The deal is that once the script has setup the lock doesn't get released so any further calls to the script just get ignored.

Is there a better alternative/flag I'd use? I couldn't discern much from the flock or nohup man pages.

Solved: With bit more fiddling found the - u flag on the flock man page. You can unlock yourself at the very end of the script.

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[-] Frid0lin@feddit.org 2 points 1 month ago

Thanks for the update maybe I'm a bit oldschool and need to dig deeper "in the flock" ;-)

[-] Gonzako@lemmy.world 2 points 1 month ago

sorry fLock it my phone doesn't like it and don't really know what the f stands for. but flock is a Linux command that let's you manage simple concurrency issues https://www.man7.org/linux/man-pages/man1/flock.1.html

[-] Badabinski@kbin.earth 2 points 1 month ago

the f stands for file. The c manpage has some details on how it works: https://www.man7.org/linux/man-pages/man2/flock.2.html

this post was submitted on 14 Oct 2025
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