bash clean filenames

clean.sh

# convert all spaces to underscores, remove characters like {}(),\! and convert the filename to lowercase.

ls | while read -r FILE
do
    mv -v "$FILE" `echo $FILE | tr ' ' '_' | tr -d '[{}(),\!]' | tr -d "\'" | tr '[A-Z]' '[a-z]' | sed 's/_-_/_/g'`
done

# just spaces to underscores

ls | while read -r FILE
do
    mv -v "$FILE" `echo $FILE | tr ' ' '_' `
done