杀了bash和子进程 [英] Kill bash and child process

问题描述

我的C程序在bash shell中执行命令。要做到这一点，我叉和子进程我运行：

My C program executes commands in a bash shell. To do this, I fork and in the child process I run:

char* command = "..."; /* provided by user */
execlp("/bin/bash", "bash", "-c", command, NULL);

如果这是一个长期运行的命令，我想有杀死它的选项。例如，说我这样做的：

If this is a long running command, I would like to have the option of killing it. For example, say I'm doing:

execlp("/bin/bash", "bash", "-c", "find / test", NULL);

在此之后，我知道，正在执行的bash的子进程的PID，但bash由派生一个单独的进程来执行的发现。

After this, I know the PID of the child that is executing bash, but bash is forking a separate process to execute find.

$ ps aux | grep find
zmb       7802  0.0  0.1   5252  1104 pts/1    S+   11:17   0:00 bash -c find / test
zmb       7803  0.0  0.0   4656   728 pts/1    S+   11:17   0:00 find / test

我可以杀死bash进程（7802），但发现过程（7803）仍继续执行。我怎样才能确保bash进程传播信号，它的孩子吗？

I can kill the bash process (7802), but the find process (7803) still continues to execute. How can I ensure that the bash process propagates signals to it's children?

推荐答案

这会SIGTERM发送到参数传递的进程组ID和所有的孩子。

It will send a SIGTERM to the Process Group ID passed in parameter and to all children.

kill -- -$(ps -o pgid= $PID | grep -o [0-9]*)

另外，对这个职位更多的答案：最好的方式杀死所有的子进程

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