Examples on how to manipulate Files and Folders with Bash

ff.sh

#!/bin/bash
# ff.sh ver 1.0 
# Manipulate Files and Folders with Bash…

# minimal check of correct amount of input arguments
if [[ $# -eq 0 ]] ; then
	echo "Use a file with a valid file extension, then do:"
	echo "bash ff.sh [testfile.ext]"
	exit 0
fi

# folder to look in
FOLDER="."

# full path to file
DIRFILE=$FOLDER"/$1"
echo $DIRFILE

# just the directory
JUSTDIR=$(dirname $DIRFILE)
echo $JUSTDIR

# just the filename and extension without path
JUSTFILE=$(basename $DIRFILE)
echo $JUSTFILE

# just the filename with extension v2
JUSTFILE2="${DIRFILE##*/}"
echo $JUSTFILE2

# just the filename without extension
JUSTNAME="${JUSTFILE%.*}"
echo $JUSTNAME

# just the extension without the filename
EXTENSION="${JUSTFILE##*.}"
echo $EXTENSION