bash 捕捉键盘中断
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catching keyboard interrupt
提问by j.lee
I have a bash script that is executing a program in a loop and reading the output from the program. I wish that when I hit control-c, it terminates the program as well as the script.
我有一个 bash 脚本，它在循环中执行程序并读取程序的输出。我希望当我点击 control-c 时，它会终止程序和脚本。
I tried this but does not seem to terminate the program.
我试过了，但似乎没有终止程序。
control_c() {
exit
}
while true ; do
trap control_c SIGINT
my_command | while read line ; do
echo $line
...
done
done
Can someone show me the correct way to accomplish what I have described? Thank you!
有人可以告诉我完成我所描述的事情的正确方法吗？谢谢！
回答by alnet
You can do something like this:
你可以这样做：
control_c() {
kill $PID
exit
}
trap control_c SIGINT
while true ; do
my_command | while read line ; do
PID=$!
echo $line
...
done
回答by Russell Davis
Try killing the program in your control_c()function, e.g.,
尝试杀死您control_c()函数中的程序，例如，
pkill my_command
