in reply to pinger - ping a range of hosts
I only have 2 comments really :)
- Your regexp for IP's is flawed, I can enter 999.999.999.999, which obviously isn't a real IP.
I found something similar to this in the Ram book
(?:(?:[01]?\d?\d|2[0-4]\d|25[0-5])\.?){4}
Disclaimer: I realize this may not be the most efficent regex, but it does work, right? - If you're on a UNIX machine, you could always use nmap
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