1 #! /bin/sh
 2 
 3 awk '
 4 $1=="Chapter" {
 5         mainH=$0
 6         a=match($2,/[0-9]/)
 7         id=substr($2,a)
 8         tid=sprintf("%02d",id)
 9         fid=$1tid
10     }
11 {print $0 > fid".txt"}
12 ' abs-guide.txt