A script which will modify file names. The script is dedicated to lowerizing (-l) file names, uppercasing(-u) file names or internally calling sed command with the given sed pattern which will operate on file names. Changed may be done either with recursion (-r) or without it.
A second script modify_examples leads the tester of the modify script throuugh some typical, uncommon and even incorrect scenarios of usage of the modify script.
modify [-r] [-l|-u] <dir/file names...>
modify [-r] <sed pattern> <dir/file names...>
modify [-h]