On 08/04/2016 04:35 PM, Rich Shepard wrote: > According to man rename: > > rename .htm .html *.htm > > will fix the extension of your html files. > > So, I expect that > > rename .JPG *.jpg > > will change the extension to lower case. It doesn't: > > rename: not enough arguments > > And, 'rename *.JPG *.jpg' produces the same error message. > > I've done this before and do not see what I'm doing incorrectly this time. > Perhaps it's the heat today but fresh eyeballs might see my syntax error.
I used to need to do that, and someone on this list provided this answer: The tricky part in the middle is a Perl substitution with regular expressions, highlighted below: rename -v ’s/\.htm$/\.html/’ *.htm Tip: There is an intro to Perl regular expressions here. Basically the "s" means substitute. The syntax is s/old/new/ — substitute the old with the new. A . (period) has a special meaning in a regular expression — it means "match any character". We don't want to match any character in the example above. It should match only a period. The backslash is a way to "escape" the regular expression meaning of "any character" and just read it as a normal period. -- Regards, Dick Steffens _______________________________________________ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug