handling crashed commands

[gggeek]

If a command crashes, my gut feeling is that it will stay locked forever.
it would be nice to have an 'unlock' command to allow removing the locks.
Even better: to have a cronjob that automatically removes locks that are older than X days/hours

[bOnepain]

Isn't it the operating system that releases the lock (acquired by the flock function) automatically when the file is closed or the script crashes ? @gggeek Could you describe a use case where the lock was not properly released on script crash ?