Travels with Charlie

lsof -P -i -n | cut -f 1 -d " " | uniq

When you press return, you’ll see a list of processes that are using the Internet connection; at the time I wrote this, my output looked like this:

$ lsof -P -i -n | cut -f 1 -d " " | uniq  COMMAND  AppleVNCS  PTHPasteb  SystemUIS  aosnotify  iTunes  GrowlHelp  Transmit  iChatAgen  firefox-b  VPNClient  Mail