bin/cut-in-4

   1 #!/bin/bash
   2 # This script cuts a 3840x2160 in 4 pieces
   3
   4 convert "$1"'[1920x1080+0+0]' "${1%.*}_tl.png"
   5 convert "$1"'[1920x1080+1920+0]' "${1%.*}_tr.png"
   6 convert "$1"'[1920x1080+1920+1080]' "${1%.*}_br.png"
   7 convert "$1"'[1920x1080+0+1080]' "${1%.*}_bl.png"
   8