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#! /bin/sh

#this is where your files will be put
mkdir originals

# I run mozjpeg for everyfile in this dir, adding the suffix .tmp, and move the original file in /originals
for f in ./*.jpg;
do
mozjpeg -optimize -outfile $f.tmp  $f;
mv $f originals/$f;
done

# fir evry .tmp i rename it without the extension,
for f in ./*.tmp;
do
mv $f "${f%.*}"
done