Rename file and folder to a given filename.txt's content

filerenamer.sh

#!/bin/sh

# Verbose helper method.
# @1 bool verbose switch
# @2 string text
# @3 string log file
myverboseoutput() {
	if [ $1 = TRUE ]
	then echo $2;
	fi
	
	# Trim logfile filename.
	LOGF=${3## }
	LOGF=${LOGF%% }
	if [ ! $LOGF = "" ]
	then echo $(date)"\t$2" >> $LOGF
	fi
}

## parameters
# $1 - path
# $2 - file map (like *.avi)
# $3 - filename file
# options
#  -r : recursive
#  -v : verbose
#  -s : simulate
#  -l : logfile
#  -f : rename folder too
#  -d : delete filename file


# Parse Options
RECURSIVE=FALSE
VERBOSE=FALSE
SIMULATE=FALSE
LOGFILE=""
RENAME_FOLDER=FALSE
DELETE_FILENAME_FILE=FALSE

while getopts "rvsfdl:" OPTION
do
	case $OPTION in
		r) RECURSIVE=TRUE;;
		v) VERBOSE=TRUE;;
		s) SIMULATE=TRUE;;
		l) LOGFILE=$OPTARG;;
		f) RENAME_FOLDER=TRUE;;
		d) DELETE_FILENAME_FILE=TRUE;;
	esac
done

# Shift params as long as they are options.
shift $((OPTIND-1))

# Check parameters and set defaults
ROOT_PATH=${1:-"."}
FILE_EXT=${2:-"avi"}
FILENAME_FILE=${3:-"filename.txt"}

# Quit if root folder does not exist.
if [ ! -d $ROOT_PATH ]
then echo "Folder $ROOT_PATH does not exist."; exit
fi

# Find all folders to run through
declare -a FOLDERS
if [ $RECURSIVE = TRUE ]
then
	FOLDERS=$(find $ROOT_PATH -type d)
else
	FOLDERS=($ROOT_PATH)
fi

# Declare for separators to not use spaces.
SAVEIFS=$IFS
IFS=$(echo "\n\b")

for FOLDER in $FOLDERS
do
	myverboseoutput $VERBOSE "Scanning $FOLDER" $LOGFILE

	# Check if there is a FILENAME_file
	FILENAME=""
	if [ -f "$FOLDER/$FILENAME_FILE" ]
	then
		FILENAME=$(cat "$FOLDER/$FILENAME_FILE");
		
		# If we got a valid filename
		if [ $((${#FILENAME}>0)) ]
		then
			myverboseoutput $VERBOSE "\tFilename: $FILENAME" $LOGFILE
			
			# count files to be renamed.
			FCOUNT=0
			
			# 2> /dev/null is for hiding errors (e.g. if no file with the map exists)
			for FOUND_FILE in $(find $FOLDER/*.$FILE_EXT -type f -prune 2> /dev/null)
			do
				myverboseoutput $VERBOSE "\t\tFile: $FOUND_FILE" $LOGFILE
				
				FBASE=$(basename "$FOUND_FILE" ".$FILE_EXT")
				myverboseoutput $VERBOSE "\t\t\tBase: $FBASE" $LOGFILE
				
				if [ $FCOUNT = 0 ]
				then
					myverboseoutput $VERBOSE "\t\t\t$FOUND_FILE ==> $FOLDER/$FILENAME.$FILE_EXT" $LOGFILE
					if [ ! $SIMULATE = TRUE ]
					then
						mv $FOUND_FILE "$FOLDER/$FILENAME.$FILE_EXT"
					fi
				else
					myverboseoutput $VERBOSE "\t\t\t$FOUND_FILE ==> $FOLDER/$FILENAME $FCOUNT.$FILE_EXT" $LOGFILE
					if [ ! $SIMULATE = TRUE ]
					then
						mv $FOUND_FILE "$FOLDER/$FILENAME $FCOUNT.$FILE_EXT"
					fi
				fi
				
				FCOUNT=$(($FCOUNT+1))
			done
			
			
			# Delete filename file
			if [ $DELETE_FILENAME_FILE = TRUE ]
			then
				myverboseoutput $VERBOSE "\t\tRemoved: $FOLDER/$FILENAME_FILE" $LOGFILE
				if [ ! $SIMULATE = TRUE ]
				then rm "$FOLDER/$FILENAME_FILE"
				fi
			fi
			
			# Rename folder
			if [ $RENAME_FOLDER = TRUE ]
			then
				if [ ! $FOLDER = $(dirname "$FOLDER") ]
				then
					NEWFILE=$(dirname "$FOLDER")"/$FILENAME"
					myverboseoutput $VERBOSE "\t\tFolder: $FOLDER ==>  $NEWFILE" $LOGFILE
					if [ ! $SIMULATE = TRUE ]
					then mv $FOLDER $NEWFILE
					fi
				fi
			fi
		fi
	fi	
done

# reset for seperator.
IFS=$SAVEIFS

Example command

sh ~/filerenamer.sh -rfv -l rename.log . avi filename.txt