critical section

In Linux, handling signals such as SIGINT (signal interrupt) can be crucial, especially when writing scripts that involve critical operations which should not be interrupted. In this blog, we'll explore how to manage these situations using the trap command in Bash scripting. Q: What is SIGINT in Linux? A: SIGINT is a signal in Unix-like systems that the kernel sends to a foreground process when the user types an interrupt character (usually Ctrl+C). This signal tells the application to stop running. Q: How can I block SIGINT in a shell script? A: You can block SIGINT by trapping the signal and assigning an empty string as its handler during a critical section in your Bash script. You can do this using the syntax trap '' INT.