Usage Add prefix "new-" to all files mf -a "new-" file1.txt -> new-file1.txt file2.txt -> new-file2.txt Remove substring "old-" from all files mf -r "old-" old-file1.txt -> file1.txt old-file2.txt -> file2.txt Combine: remove "old-" and add "test-" in one go mf -a "test-" -r "old-" old-file1.txt -> test-file1.txt old-file2.txt -> test-file2.txt TODO adding new name to all files remove specific name in all files option transform to lowercase option change filename that have spaces to (-) or (_) distribution across os