🚀 go-pugleaf

Here's a short script that does the same.

Wayne

#! /bin/sh
# output sequence of integers - W. Thompson - 01/29/88
#
USAGE='usage: num [-wWIDTH] [firstn] lastn.'

if [ $# -eq 0 ] || [ $# -gt 3 ]
then
	echo "$USAGE"
	exit
fi

for i
do case "$i" in
      -w[0-9])	WIDTH=`expr substr $i 3 1`;
                shift;;
      -*)	echo "$i illegal option";
                exit;;
      *)	break;;
   esac
done

if [ $# -eq 1 ]
then
	START=0
	END=$1
else
	START=$1
	END=$2
fi

awk '
	END {
		for (i = '$START'; i <= '$END'; i++)
			printf ("%0'$WIDTH'd\n", i)
	}
' /dev/null