[rmhash] Bash script to delete files if they have a hash equal to that of another file. #cli #tool

rmhash.sh

#!/usr/bin/env bash

if [ "$#" -lt 2 ] || [ "$#" -gt 3 ] ; then
	echo Invalid number of parameters. This script takes 2 or 3 parameters.
	echo 
	echo This script files files that have a hash equal to that of a specified
	echo file and deletes them.
	echo 
	echo =-=-=-=-=-
	echo =- Help -=
	echo -=-=-=-=-=
	echo rmhash can be used in two ways. You can either specify a file to hash,
	echo or you can specify a hash directly.
	echo 
	echo To specify a file to hash, do something like this:
	echo 
	echo \  \  rmhash.sh file \"filename here\"
	echo 
	echo If you want to specify a hash, do something like this:
	echo 
	echo \  \  rmhash.sh hash \"e834ccf7133275ad4b7f05d04c20f710\"
	echo 
	echo If you don\'t want rmhash to delete anything, do something like this:
	echo 
	echo \  \  rmhash file \"filename here\" notreally
	echo 
	echo This script was built by Starbeamrainbowlabs on Windows 7.
	echo Twitter: @SBRLabs Github: @sbrl Website: https://starbeamrainbowlabs.com/
	echo 
	echo Too much information? Try rmshash.sh \| less or rmhash.sh \| more.
	echo
	exit
fi

if [[ "$1" = "file" ]]; then
	echo Entering file mode.
	search_hash=$(md5sum "$2" | cut -c 1-32);
else
	echo Entering hash mode.
	search_hash=$2
fi

delete=true
if [[ "$3" = "notreally" ]]; then
	echo Not really deleting files.
	delete=false
fi


count=0;

echo Searching for files with hash $search_hash.
echo 

for file in **; do
	[[ -f "$file" ]] || continue
	
	hash=$(md5sum < ${file} | cut -c 1-32);
	
	if [ "$hash" = "$search_hash" ]; then
		echo $file
		if [ "$delete" = true ]; then
			rm $file
		fi
		((count++))
	fi
done

echo 
if [ "$delete" = true ]; then
	echo Found and deleted $count files.
else
	echo Found $count files.
fi