Functions

Functions are defined with parentheses and braces:

greet(name) {
  echo "Hello, $name!"
}

They support named parameters or you can use $1, $2, etc.:

add(a, b) {
  calc "$a + $b"
}

Call them like this:

greet Alice
RESULT=`add 10 20`
echo "Sum is $RESULT"

Use return to exit the function and exit to quit the script entirely.

Functions ​