Linux KILL command gives you killing opportunities to use SIGNALs. In this post we’re going to Pause (or suspend) and Start an ongoing Linux process.
Problem: The requirement here is to pause a process for certain time and run it only during off hours. The process itself doesn’t have this option and also we cannot stop it in-between, as it will start from the scratch again.
Solution: To resolve this we can think of sending out signals to the process to hint it to Pause or Progress.
A signal is an asynchronous notification sent to a process or to a specific thread within the same process in order to notify it of an event that occurred. When a signal is sent, the operating system interrupts the target process’ normal flow of execution to deliver the signal.