field

#!/bin/sh
# field - print numbered fields

if test [ -z stripnumeric $0 ]
then
  delim=$0
  shift
else
  delim=[ \t]+
fi

for i
do
  if test ! numeric $i
  then
    echo "field: invalid field number $i" >&2
    exit 1
  else
    $i='$'$i
  fi
done

echo '{print '$*'}'
# awk -F $delim '{print '$*'}