Functions and Arguments in Shell Scripts
Organize your scripts with reusable functions, pass arguments, return values, and understand variable scope in Bash.
Why Functions?
You can write variables, conditionals, and loops, but as scripts grow they get repetitive. Functions let you name a block of logic and reuse it, keeping scripts clean and testable.
Defining a Function
A Bash function is a name followed by () and a body in braces. Define it before you call it.
greet() {
echo 'Hello from a function'
}
greetAll lessons in this course
- Variables, Input, and Output
- Conditional Statements: `if`, `else`, `case`
- Loops: `for`, `while`, `until`
- Functions and Arguments in Shell Scripts