1#!/bin/sh 2 3sed 's/[^A-Z0-9a-z_][^A-Z0-9a-z_]*/ /g' "$@" | awk ' 4 { for (i = 1; i <= NF; i++) { 5 if (length($i) > 1 && $(i) == last) { 6 if (i == 1) 7 printf("%s ", last) 8 print 9 } 10 last = $(i) 11 } 12 } 13' 14