tldr/pages/osx/trap.md

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2018-02-06 23:26:15 +03:00
# trap
> Automatically execute commands after receiving signals by processes or the operating system.
> Can be used to perform cleanups for interruptions by the user or other actions.
- List available signals to set traps for:
`trap -l`
- List active traps for the current shell:
`trap -p`
- Set a trap to execute commands when one or more signals are detected:
`trap 'echo "Caught signal {{SIGHUP}}"' {{SIGHUP}}`
- Remove active traps:
`trap - {{SIGHUP}} {{SIGINT}}`