About
Get an easy-to-understand introduction to Bash, the powerful command-line shell and scripting language for Linux. With Bash scripting, you can automate repetitive tasks, manage system operations, and boost your overall coding productivity.
Our Bash scripting cheat sheet is a quick guide to running Bash scripts, explaining foundational concepts through helpful code examples. You'll learn how to perform the following tasks:
- Create Bash scripts using shebang headers or by directly calling the Bash interpreter
- Declare variables
- Manipulate strings using parameter expansion
- Manage arrays and maps
- Define functions for reusing code
- Create conditional statements for decision-making
- Use loops to process data
- Report success and failure using exit codes
Download the Bash cheat sheet and learn the basics of Bash shell scripting to start automating tasks efficiently within your Linux environment.
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Excerpt
Creating an array
The following creates an array with three elements and assigns the array to the variable named my_array.
my_array=('Alex' 'Ada' 'Alexandra')Adding an element to an array
The following uses the += operator to add an element with the value Soto to the array named my_array.
my_array+=('Soto')Removing an element to an array
The following uses the unset keyword to remove the fourth element from the array named my_array at index 3.
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