How to start and pause jmeter test plan run

I have a jmeter test plan that is running in a non gui mode on linux to test a server. I want to pause the jmeter test plan for some time to carry some maintenance on server and want to resume the test plan from where it got paused.

I don't know when to stop the test plan before hand, so i can't use timers to code in jmeter

Is there a pause button on jmeter GUI and NON GUI mode to pause the test plan