Batch resizing JPEG images with ImageMagick

batch_resize.sh

#!/bin/bash

if [ ! -d ./resized ]; then mkdir ./resized; fi;

# creates the screen image
for f in *.JPG;
do
    echo "Processing $f"
    convert -strip  -modulate 105,110,100  -resize "1024x768"  -unsharp 0,1.5,0.05  \
        $f ./resized/$f
done

cd ./resized

# change the image names
for i in *.JPG;
do
    mv "$i" "${i/.JPG}"_s.JPG;
done