Shell script to organize a folder based on file extension.

clean.sh

#!/bin/bash

#Get all files in the directory
for file in *
do
	#Get the filenames and extensions
	filename=$(basename -- "$file")
	extension="${filename##*.}"
	
	#If the file isn't the cleaning script
	if [ "$file" != "clean.sh" ]; then
		if [ ! -d "./$extension" ]; then
			mkdir $extension
			echo "Made the folder for $extension"
		fi
		if [ -f "$filename" ]; then
			mv "$file" "./$extension/$file"
			echo "Moved $filename to the $extension folder."
		fi
	fi
done