重新启动Shell脚本而不在Linux中创建新进程 [英] Re-start shell script without creating a new process in Linux

问题描述

我有一个要执行的shell文件，最后，我可以按 ENTER 并再次运行它.问题是，每次按 ENTER 都会创建一个新进程，经过20或30回合后，我会得到30个PID，这些PID最终将使我的Linux混乱.因此，我的问题是:如何使脚本始终在同一进程中运行，而不是每次按 ENTER 时都创建一个新脚本?

I have a shell file which I execute then, at the end, I get the possibility to press ENTER and run it again. The problem is that each time I press ENTER a new process is created and after 20 or 30 rounds I get 30 PIDs that will finally mess up my Linux. So, my question is: how can I make the script run always in the same process, instead of creating a new one each time I press ENTER?

代码:

#!/bin/bash

echo "Doing my stuff here!"

# Show message
read -sp "Press ENTER to re-start"
# Clear screen
reset
# Re-execute the script
./run_this.sh

exec $SHELL

推荐答案

您将需要exec脚本本身，就像这样

You would need to exec the script itself, like so

#!/bin/bash

echo "Doing my stuff here!"

# Show message
read -sp "Press ENTER to re-start"
# Clear screen
reset
# Re-execute the script
exec bash ./run_this.sh

exec不适用于shell脚本，因此您需要使用execute bash来代替脚本作为参数.

exec does not work with shell scripts, so you need to use execute bash instead with your script as an argument.

也就是说，脚本内循环是一种更好的方法.

That said, an in-script loop is a better way to go.

while :; do
  echo "Doing my stuff here!"

  # Show message
  read -sp "Press ENTER to re-start"
  # Clear screen
  reset
done

这篇关于重新启动Shell脚本而不在Linux中创建新进程的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！