mirror of
https://github.com/tldr-pages/tldr.git
synced 2025-07-02 23:55:30 +02:00
ced5cb22f6
* eval, exec, exit, export, readonly, set, shift, trap: use Open Group links * exec, export, trap: split Linux and POSIX
17 lines
521 B
Markdown
17 lines
521 B
Markdown
# 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}}`
|