A bash implementation of the GNU seq command found on most unix systems. This is useful on AIX (which seems to lack seq)

seq.sh

#!/bin/bash
# Implements GNU seq functionality. 
# Useful on IBM AIX systems which don't have GNU coreutils.

if [ -z "$3" ]; then
    # if no third arg
    incr=1
    j=$2
else
    incr=$2
    j=$3
fi
i=$1

while [[ i -le j ]]; do
      echo $i
      let i+=$incr
done

Are we to add this to our existing script?