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Flock: Difference between revisions
→CLI
(Created page with "Flock is a tool to prevent running a script multiple times. ==Usage== ===CLI=== ===In a bash script=== <syntaxhighlight lang="bash"> exec {lock_fd}>$LOCKFILE || exit 1 flock -n "$lock_fd" || { echo "Another instance is running" >&2 exit 1 } # Note that the fd will unlock automatically at the end of the script. # Unlock once all background processes are done. exec {lock_fd}>&- # Or unlock immediately flock -u "$lock_fd" </syntaxhighlight>") |
(→CLI) |
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==Usage== | ==Usage== | ||
===CLI=== | ===CLI=== | ||
<pre> | |||
flock -n $LOCKFILE $MY_COMMAND | |||
</pre> | |||
===In a bash script=== | ===In a bash script=== | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||