What is "Pinger"?
Pinger is a smallish Tcl/Tk script for doing ping testing of an IP computer network.
Why do we need Pinger?
Both UNIX and Windoze have a built-in command called "ping" which sends an ICMP ECHO message to a specified host and listens for a reply.
RS Depending on what you want... For seeing whether a computer is reachable,
catch {exec ping $host} resreturns 0 if the ping was successful, and 1 if not. The variable res contains the output of ping, if you want to analyze it more in depth :^)