Re: how to convert 100 bmp files to jpeg?
On Mon, 2006-01-16 at 08:40 +1100, Tim Connors wrote:
> Star King of the Grape Trees <thestar@fussycoder.id.au> said on Sun, 15 Jan 2006 16:05:42 +1100:
> > Serena Cantor wrote:
> >
> > >I 100 bmp files. I installed gimp and imagemagik, but
> > >can't find the way to convert 100 bmp files to jpeg in
> > >batch fashion. Do you know the command? Thanks!
> > >
> > >
> > I can't be bothered to consult the man page, but it will be something like:
> >
> > for $f in `ls *.bmp`; do convert $f --to-jpeg; done
> >
> > See "man convert" for the precise arguments.
> >
> > If the files are organized in directories, you may need to use 'find'
> > instead of just 'ls'. See man find.
>
> Why on earth would you want to put ls in backticks? I wonder who
> originated this rather redundant and fragile (what happens when a
> filename has any form of whitespace?) construct?
If you're dealing with so many files that the bash "glob buffer"
fills up, `ls *.bmp` can work around that.
> Try googling for
> "useless use of cat awards" for another redundant construct that
> people love to use.
>
> for f in *.bmp ; do convert $f --to-jpeg ; done
>
>
> But even better than the above is just:
> mogrify -format jpg *.bmp
> You can probably also (untested):
> convert --to-jpeg *.bmp
--
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Ron Johnson, Jr.
Jefferson, LA USA
"Facts do not cease to exist because they are ignored."
Aldous Huxley
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