Basic navigation
// move to a folder (change directory):
cd /Users/Liz/photos/
// list files in current folder:
ls
Image manipulation
These snipets use image magick to manipulate, convert and dither images
convert png to jpg
// single image:
magick image.jpg image.png
// batch process all images in a folder:
magick mogrify -format jpg *.png
resize and dither
// single image:
magick convert image.jpg -colorspace Gray -ordered-dither o8x8 image-low.jpg
// batch process all images in a folder: