northern-bites/nbites — pull request #348 by bjacobel (2012-06-20 00:48:38+00:00)
Title: Ping script

added support for nmap's -T parameter, which sets the time-to-live of your ping requests. Running ./pingall # (where # is 1-5) will set this parameter: low numbers will be slow but more representative of whether robots are actually on, high numbers will be fast and representative of which robots are responding at that exact moment. Putting anything besides 1-5 runs you at -T3, which is both moderately fast and complete.