This is the command isrange that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
isrange - AME
SYNOPSIS
Return 1 if argument is a range of numbers: n1[-n2[xs]],...
DESCRIPTION
where n1=first number, n2=last number, and s=step size.
Use isrange online using onworks.net services