#!/usr/local/bin/nawk -f BEGIN { for (i = 32; i < 128; i++) { if ((i != 32) && (! (i % 16))) printf "\n" printf "%c ", i, i } printf "\n" for (i = 160; i < 256; i++) { if (! (i % 16)) printf "\n" printf "%c ", i, i } print "\n" } .