# Extract (at most 36 MB) 8-bit PPM image file. Assumes dimensions greater
# or equal to 1000 by 1000 pixels. May not match PPM files that contain
# comments in the header or unusual whitespace.
# Contributed by Daniel J Blueman
0 string P6\n
13 string 255\n
extension ppm
command dd bs=1024k count=36 of="$1" 2>/dev/null