ProFTPd - Fatal: Socket operation on non-socket
I was trying to set up ProFTPd on Ubuntu recently and for some reason it wouldn't start. Somehow the configuration had been messed up (or something had been). I uninstalled and reinstalled it, but still it wouldn't start. While trying to fix this problem, I came across this brilliant FAQ:Â Chapter 4. Common Running problems . This described all the problems I was having: 3. Unable to bind to port/Address already in use 5. "Fatal: Socket operation on non-socket" It's great to see such a useful FAQ.