Rename multiple files on Mac Terminal to lowercase and replace the spaces

rename-multiple-files.md

First, make sure you are on the right directory on mac terminal app.

If you want to change only jpg files you can use $ for f in *.JPG; instead of $ for f in *;

Renaming to lowercase

$ for f in *; do mv "$f" "`echo $f | tr "[:upper:]" "[:lower:]"`"; done

Replacing spaces in file names to hyphens

$ for f in *; do mv "$f" "`echo $f | tr " " "-"`"; done

Use \000 to remove characters

$ for f in *; do mv "$f" "`echo $f | tr "," "\000"`"; done