Update Oops, didn't see the system call was multi-arg. I should probably get some sleep. ; )

system won't return the text that is spit out onto STDOUT by the program it calls. You should use backticks for that, but the problem with backticks is security holes. As for formatting, just use the pre HTML tag to keep the formatting...

BUT, you shouldn't be doing any of that, because the person running it could put anything in $ip. You haven't provided other code, so I don't know if you do filtering and escaping, but even then I wouldn't do something like that. It is almost a guaranteed security hole. What if I set $ip to "; rm -rf /"? It would run

nmap; rm -rf /
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