pwgen, sshuttle, trap, tree: move to common (#6551)

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marchersimon
2021-09-19 16:13:40 +02:00
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# 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。
- 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}}`