Bash Scripting Beyond the Basics: A Guide for Improved Scripts
In this video, you'll learn how to take your bash scripting skills to the next level. We'll cover the set -e, set -u, and set -x commands which allow you to exit immediately if a command fails, treat undefined variables as an error, and turn on the execution trace mode respectively. We'll also look at how to use the $? parameter to check the exit status of a command and perform conditional actions based on the result.
You'll learn how to simulate classes in bash using functions and variables, perform arithmetic operations and string operations in your scripts, and how to use command substitution to execute a command and replace it with its output in the script.
Finally, we'll cover input/output redirection, which allows you to redirect the input and output of commands in your scripts.