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Sindi wrote:
>
> how can I shrink all the files in a directory with one command or script?

To which David replied:
> 
> jpegtopnm infile.jpg | pnmscale .5 | pnmtojpeg >outfile.jpg
> 
> You need to put this in a 'for' loop in order to process multiple files
> at once.

for i in * ; do jpegtopnm $i | pnmscale .5 | pnmtojpeg >$i.new ; done

Cheers,
Steven

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