Resize images in a folder to a minimum size, keep aspect ratio.

resize-images.sh

#!/bin/bash

#Edit webroot to meet your needs

IFS=$'\n'
set -e
minimumWidth=1000
minimumHeight=1000

FILES=$(find /webroot/media/catalog/product/  \( -name cache -prune \) -o -name '*' -type f -exec file {} \; | awk -F: '{ if ($2 ~/[Ii]mage|EPS/) print $1}')

AMOUNT=`echo $FILES | wc -w`

COUNTER=0

if [ ! -z "$FILES" ];
then
	for F in $FILES
	do 
		imageWidth="$(identify -format "%w" "$F")"
	    imageHeight="$(identify -format "%h" "$F")"
	    if [ "$imageWidth" -ge "$minimumWidth" ] || [ "$imageHeight" -ge "$minimumHeight" ]; then
	        echo "Not Changed. " ''"$imageWidth"x"$imageHeight"'' "$F"
	    else
	    	#echo "Initial Size"
			#ls -lah "$F" | awk -F " " {'print $5'}
	    	mogrify -resize ''"$minimumWidth"x"$minimumHeight<"'' "$F"
	    	#echo "Resized Size"
			#ls -lah "$F" | awk -F " " {'print $5'}
	       let COUNTER=COUNTER+1 
	       NewimageWidth="$(identify -format "%w" "$F")"
	       NewimageHeight="$(identify -format "%h" "$F")"
	       echo "Mogrifyed. $NewimageWidth"x"$NewimageHeight"
	    fi
	    
    done
    
fi
echo "Done! $COUNTER of $AMOUNT files found and changed!"