Re: how to rename multiple files
On Sat, Jan 04, 2003 at 07:00:03PM -0600, Gerald V. Livingston II wrote:
> Colin Watson said:
> > On Tue, Dec 10, 2002 at 11:20:31AM -0800, Osamu Aoki wrote:
> >> if [ -e *.JPG ]; then for i in *.JPG; do mv "$i" "${i%.JPG}.jpg";
> >> done fi
> >
> > That -e test looks dreadful ... surely it'll usually expand to lots of
> > arguments which will confuse [, or perhaps to an empty string
> > (nullglob)
> > which will also confuse test?
>
> And I've bumped into this. How *DOES* one test for the existence of
> ANY file with a given extension without getting a "too many arguments"
> error when there are multiple files?
How about:
find . -maxdepth 1 -name '*.jpg' -print | grep -q .
? This keeps the shell's wildcard expansion comfortably out of the
equation.
(The first '.' and the '-print' are redundant with GNU find, but useful
on other systems.)
--
Colin Watson [cjwatson@flatline.org.uk]
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