FS_recursive_deep_search.sh

#!/bin/bash
### Recursively iterates over a filesystem structure and performs some action (defined in action() ) on it

### Debug switch
debug=false

### Useful variables for use in action()
#targetPath=/PATH/TO/DIRECTORY/
#targetFile=/PATH/TO/FILE
#

### Action on file is defined within this function
# $file contains the complete path to the current file the action acts on
action() {
### Examples:
#	echo $file
#	rsync -arv $file $targetPath --progress
#	mv "$file" "$file.pdf"
#	cat $file >> $targetFile
}

checkiffile() {
	pFile=$1
	if [ -d "${pFile}" ] ; then
		if $debug; then
			echo "${pFile} is a directory!"; 
		fi
		exit 1
	else
		if [ -f "${pFile}" ]; then
			if $debug; then
				echo "${pFile} is a regular file!";
			fi
			exit 0
		else
			if $debug; then
				echo "${pFile} is neither a directory nor a regular file!";
			fi
			exit 2
		fi
	fi
}

recursivesearch() {
	#echo $(realpath $1)
	
	for f in $1/*;
	do
		if $(checkiffile $f) ;
		then
			file=$(realpath $f)
			action
		else
			#echo "$f"
			#echo "directory"
			recursivesearch $(realpath $f)
		fi		
	done
}

recursivesearch $(realpath ./)