如何注销当bash处理工作？ [英] How bash handles the jobs when logout?

问题描述

据我从书本和bash手册了解的是。当用户从庆典注销由用户启动的所有后台作业将自动终止，如果他不使用的nohup或否认。但今天我测试了它：

As far as I understood from the books and bash manuals is that. When a user logs out from bash all the background jobs that is started by the user will automatically terminate, if he is not using nohup or disown. But today I tested it :

1. 登录到我的gnome桌面和访问的gnome-terminal。



2. 有在终端两个选项卡，在一个我创建了一个新的用户名为测试，并记录在作为试验

1. Logged in to my gnome desktop and accessed gnome-terminal.

2. There are two tabs in the terminal and in one I created a new user called test and logged in as test

su - test

开始的脚本。

started a script.

cat test.sh
#!/bin/bash
sleep 60
printf "hello world!!"
exit 0


./test.sh &

这之后我登出测试和关闭标签

After that I logged out of test and closed the tab

这是怎么回事？

推荐答案

无论是运行后台作业终止退出取决于外壳。巴什一般不会这么做，但可以配置为登录shell（禁用了javascript -s huponexit ）。在任何情况下，获得了TTY是不可能控制处理（例如登录壳）终止后

Whether running background jobs are terminated on exit depends on the shell. Bash normally does not do this, but can be configured to for login shells (shopt -s huponexit). In any case, access to the tty is impossible after the controlling process (such as a login shell) has terminated.

该情况总是做事业 SIGHUP 包括：

Situations that do always cause SIGHUP include:

• 任何在前台当tty被关闭。


• 任何包括停止的进程后台作业时，他们的shell终止（ SIGCONT 和 SIGHUP ）。通常弹这又让发生前发出警告。

• Anything in foreground when the tty is closed down.
• Any background job that includes stopped processes when their shell terminates (SIGCONT and SIGHUP). Shells typically warn you before letting this happen.

huponexit总结：

huponexit summary:

$ shopt -s huponexit; shopt | grep huponexit
huponexit       on
# Background jobs will be terminated with SIGHUP when shell exits

$ shopt -u huponexit; shopt | grep huponexit
huponexit       off
# Background jobs will NOT be terminated with SIGHUP when shell exits

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