If you are writing serious bash scripts, we suggest you write them carefully. You can even find a “ lint ” program that can test for errors for you.

More than just writing help scripts, here documents are useful any time that you want to enter multiple lines and have them piped to a command. We use them most often from the shell directly.

Each Linux command returns an exit code, with 0 indicating success and non-zero values indicating failure. You can use the $? variable to access the exit code and control program flow in scripts ...

Wicked Cool Shell Scripts: 101 Scripts for Linux, OS X, and Unix Systems by Dave Taylor and Brandon Perry, 2 nd edition, no starch press (2017) is a book that can lift you up a notch in the super ...

Jack Wallen shows how you can create a Linux shell script that requires a password without having to save a password within the script.

Uptycs Threat Research outline how malicious Linux shell scripts are used to cloak attacks and how defenders can detect and mitigate against them.