#!/bin/sh
#
# xfield: extract the nominated field from a field file, place it in a
# field file of its own.
#
# Usage: xfield <num> file
#
# $Id: xfield,v 6.1 2005/07/08 03:34:19 hmb Exp $
##############################################################################

if test $# -ne 2
then
  echo 'usage: xfield <num> file' 1>&2; exit 2
else
  n=$1
  f=$2
fi

convert -a $f | head > hdr.asc
ed -s hdr.asc << XXXoooXXX
9d
8a
c                         Fields written
.
w
q
XXXoooXXX
convert -a $f | chop -s 11 | slit -c $n > fld.asc
cat hdr.asc fld.asc  

exit 0
