UNIX for Dummies Questions & Answers

find $download_dir -iname "$filename" | tr '[:upper:]' '[:lower:]'

find $download_dir -iname "$filename" | perl -lne 'rename $_, lc $_'

find $download_dir -iname "$filename" | perl -lne 'print "$_ ", lc $_'

find $download_dir -iname "$filename" | perl -lne 'print "$_ ", lc $_'

find $download_dir -iname "$filename" | perl -lne 'print "mv -v $_ ", lc $_' | sh

for f in $(find $download_dir -iname "$filename"); do mv -v $f ${f,,}; done

for f in $(find $download_dir -iname "$filename"); do echo "$f" ${f,,}; done

find $download_dir -iname "$filename" -exec rename -v 'y/A-Z/a-z/' {} +

find $download_dir -iname "$filename" | perl -lne 'print "mv -v $_ ", lc $_' | sh

find $download_dir -iname "$filename" | while read path
do
 fldr=${path%/*}
 oldfile=${path##*/}
 newfile=$(echo "$oldfile" | tr '[:upper:]' '[:lower:]')
 mv -v "$path" "$fldr/$newfile"
done