Writing shell scripts to start and stop programs

The two-day project online

I've been busy.

Three days overtime.

But there's still a harvest.

Premise:

When you write the startup script start.sh, cycle to start the change process

While True

Java-jar Xxx.jar

Done

When starting, of course, start the command in the background

Nohup start.sh &

At this point, if you want to turn off the change script, what do you do now?

Had to Ps-ef|grep start.sh

and kill this thread.

This is very troublesome and unsafe, in case you kill someone else's thread, that ...

Then write a stop script.

When thinking:

When you start the script, touch a file Start.flag

Before each cycle after starting to determine whether there are stop.flag

If it does, the stop script has started

Stops the loop and deletes the Start.flag

In the Stop script, first determine if there is a Start.flag

If there is a start.flag, create the Stop.flag

If there is no Start.flag, the startup script is not running

If you determine that Start.flag has been deleted, the startup program has stopped and deleted Stop.flag

Done