Using `cat` is wasteful in scripts but not in command line. It separates filenames, which are often actually glob patterns taking some time to confirm, from the

Using `cat` is wasteful in scripts but not in command line. It separates filenames, which are often actually glob patterns taking some time to confirm, from the parameters, which also often take some time to look up in the manual. `cat` and a pipe make it easier to edit in the command line.