#!/usr/bin/bash location='.' if [ $1 ] then location=$1 fi pushd $location dir='save-aspect-4k' if [ -d $dir ] then pushd 'save-aspect-4k' for f in *.jpg do echo $f convert $f -resize 1920x1920 -quality 65 temp_$f mv -f temp_$f $f done popd fi dir='stretch-4k' if [ -d $dir ] then pushd 'stretch-4k' for f in *.jpg do echo $f convert $f -resize 1920x1920 -quality 65 temp_$f mv -f temp_$f $f done popd fi popd