mirror of https://github.com/CrimsonTome/tldr.git
25 lines
576 B
Markdown
25 lines
576 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 causes.
|
|
|
|
- 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 '{{shell_commands}}' {{signal_names}}`
|
|
|
|
- Remove active traps:
|
|
|
|
`trap - {{signal_names}}`
|
|
|
|
- Set a trap to delete a file after the user has interrupted a download:
|
|
|
|
`trap 'rm -i master.zip' SIGINT ERR`
|