tldr/pages/linux/trap.md

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# trap
> Automatically execute commands after receiving signals by processes or the operating system.
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> Can be used to perform cleanups for interruptions by the user or other actions.
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- 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}}`
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- Remove active traps:
`trap - {{SIGHUP}} {{SIGINT}}`