tldr/pages/common/trap.md

# 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.
> More information: <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#trap>.

- List active traps for the current shell:

`trap`

- 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}}`
trap: add page 2018-02-02 21:39:19 +00:00			`# trap`

			`> Automatically execute commands after receiving signals by processes or the operating system.`
trap: more concrete command examples. 2018-02-03 12:12:32 +00:00			`> Can be used to perform cleanups for interruptions by the user or other actions.`
common/: update pages of POSIX special Built-In utilities (#11858) eval, exec, exit, export, readonly, set, shift, trap: use Open Group links * exec, export, trap: split Linux and POSIX 2023-12-29 13:07:58 +00:00			`> More information: <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#trap>.`
trap: add page 2018-02-02 21:39:19 +00:00
			`- List active traps for the current shell:`

common/: update pages of POSIX special Built-In utilities (#11858) eval, exec, exit, export, readonly, set, shift, trap: use Open Group links * exec, export, trap: split Linux and POSIX 2023-12-29 13:07:58 +00:00			`trap`
trap: add page 2018-02-02 21:39:19 +00:00
			`- Set a trap to execute commands when one or more signals are detected:`

trap: remove redundand example and add tokens 2018-02-04 11:22:24 +00:00			`trap 'echo "Caught signal {{SIGHUP}}"' {{SIGHUP}}`
trap: add page 2018-02-02 21:39:19 +00:00
			`- Remove active traps:`

trap: remove redundand example and add tokens 2018-02-04 11:22:24 +00:00			`trap - {{SIGHUP}} {{SIGINT}}`