Script to split a Mexico 15m DEM file into smaller chunks

split.sh

#!/bin/bash
set -e -u

width=218763
height=130943
y=0
while [ $y -lt $height ]
do
  x=0
  while [ $x -lt $width ]
  do
     outtif=t_${y}_$x.tif
     gdal_translate -srcwin $x $y 10000 10000 -co compress=lzw CEM3.0_R15m.bil mexico/${outtif}
     let x=$x+10000
  done
  let y=$y+10000
done