Ports in use? [solved]

[nr5]

Hello!

Im trying to "lend" port 80 on my computer to test a new app im making (app will use port 80 on server later). Any way, i keep getting errors so im guessing some other app is using port 80 at the moment...

So my question is, how can I check which ports are beeing used on my computer and by which applications?

[desultory]

[dspgen]

[truc]

what error?

Are you starting this app as a normal user or as root? for ports<1024 you have to be root
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The End of the Internet!

[nr5]

app got mad when several apps where listening on the same port. All fixed now:)