终止shell脚本后进程未终止

Question

我有一个shell脚本，可以在不打开新终端的情况下并行执行两个命令

我的剧本

 #!/bin/sh sudo command1 & sudo command2 

我需要一个shell脚本，当我在执行shell脚本的终端中按cntl + c时应终止该脚本

Answer 1

创建一个函数，使用trap在退出时执行。 注册分叉进程的进程ID，并在退出函数中终止该PID。

FORKED_PID=

# this function will be executed when the script is terminated for any reason
function finish() {
    # get the process id of the process with parent process id $FORKED_PID, and kill it
    sudo kill -9 `ps --ppid $FORKED_PID -o pid=`
}
# bind this function to the EXIT signal
trap finish EXIT

# run command1 with sudo
sudo command1 &
# get the process id from the previous command and put it in $FORKED_PID
FORKED_PID=$!
# run command2 with sudo
sudo command2