Loops in Bash

Loops are essential for automating repetitive tasks, like processing a batch of files.

For Loops

You can loop over a list of items or a sequence of numbers.

#!/bin/bash

# Looping through a specific list
for color in red blue green; do
    echo "Color: $color"
done

# Looping through a range
for i in {1..5}; do
    echo "Processing batch $i..."
done

While Loops

While loops run as long as a condition is true. They are often used to read files line by line.

count=1
while [ $count -le 3 ]; do
    echo "Count is $count"
    ((count++))
done