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trap: more concrete command examples.

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fuerbringer 2018-02-03 13:12:32 +01:00 • committed by Max Xu
parent de96778307
commit ba8b10a254
1 changed files with 3 additions and 3 deletions
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pages/linux/trap.md
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@ -1,7 +1,7 @@
# trap # trap
> Automatically execute commands after receiving signals by processes or the operating system. > 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. > Can be used to perform cleanups for interruptions by the user or other actions.
- List available signals to set traps for: - List available signals to set traps for:
@ -13,11 +13,11 @@
- Set a trap to execute commands when one or more signals are detected: - Set a trap to execute commands when one or more signals are detected:
`trap '{{shell_commands}}' {{signal_names}}` `trap 'echo "Caught signal SIGHUP"' SIGHUP`
- Remove active traps: - Remove active traps:
`trap - {{signal_names}}` `trap - SIGHUP SIGINT`
- Set a trap to delete a file after the user has interrupted a download: - Set a trap to delete a file after the user has interrupted a download: