flac_renamer.sh

#!/bin/sh
#!/bin/zsh -x

# flac_renamer.sh - Renames FLAC files by tracknumbers.
#
# usage:
# $ ./flac_renamer.sh *.flac
# : e.g. MyArtist-MyTitle.flac is renamed to 01.flac

FLAC_FILES="$@"

for f in $FLAC_FILES; do
	TRACKNUMBER=$(metaflac --show-tag=TRACKNUMBER $f | \
		sed -e 's/^TRACKNUMBER=//')
	ZERO_PADDED_TN=$(echo -n "00${TRACKNUMBER}" | \
		grep --only-matching '..$')
	if [ $f = ${ZERO_PADDED_TN}.flac ]; then
		echo "skipping $f"
		continue
	fi
	mv -i $f ${ZERO_PADDED_TN}.flac
done

# eof