Trap: Difference between revisions
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trap 'rm -f ./lock' EXIT | trap 'rm -f ./lock' EXIT | ||
Also see {{Internal|Handling Signals in bash|Handling Signals in bash}} | Also see: {{Internal|Handling Signals in bash|Handling Signals in bash}} | ||
Revision as of 00:10, 20 September 2019
Internal
Overview
Trap is a facility to instruct bash to catch signals and execute code depending on the signal. A common usage in shell scripts is to prevent those scripts to exit untimely when users type keyboard abort sequences, but run cleanup code instead.
Example:
trap 'rm -f ./lock' EXIT
Also see: