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whiteley/cron-locks.markdown

Created August 12, 2014 00:07
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cron-locks.markdown

As part of the cron command

Using flock from the util-linux package.

37 * * * * /usr/bin/flock -n /some/file -c do-something-important-with /some/file

Inside a shell script

Using the programs from the lockfile-progs package.

lockfile-create /some/file
lockfile-touch /some/file &
# Save the PID of the lockfile-touch process
BADGER="$!"
do-something-important-with /some/file
kill "${BADGER}"
lockfile-remove /some/file
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