Using Trap to Exit Bash Shell Scripts Cleanly – Linux Tutorial

In this Bash tutorial we will show you how to use trap to exit a script cleanly. It can be used to clean up temporary files, ensure service availability after a script exits, ensure ports are secured and much more.

A text version of this tutorial can be found here:
https://www.putorius.net/using-trap-to-exit-bash-scripts-cleanly.html

0:00 Introduction to Bash Exit Trap
0:49 What is trap?
1:31 The wrong way to clean up on script exit
2:05 How to use trap on exit to clean up temporary files
2:53 Using traps to ensure service availability
3:31 Ensure ports are closed after script exit
4:02 Using a function in a trap call
4:20 Conclusion