tldr/pages.zh/common/trap.md

22 lines
471 B
Markdown
Raw Permalink Blame History

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

# trap
> 在进程或操作系统接收到信号后自动执行命令。
> 可用于对用户中断或其他操作执行清理。
> 更多信息:<https://manned.org/trap>.
- 列出设置 trap 的可用信号:
`trap -l`
- 列出当前 shell 程序的活动 trap 程序:
`trap -p`
- 设置 trap 以在检测到一个或多个信号时执行命令:
`trap 'echo "检测到信号 {{SIGHUP}}"' {{SIGHUP}}`
- 移除活动 trap
`trap - {{SIGHUP}} {{SIGINT}}`