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When I select Restart from the Apple menu and get the alert "There is a user sharing this computer...", I would like to know which user (e.g. their IP address or some other identification) is sharing. Is there a (Terminal) command to discover the addresses of sharing users? (I'm not suspecting unauthorised users, rather I am trying to identify the source of a problem).

  • what kind of sharing do you have activated in your sys pref sharing. – Ruskes Aug 31 '14 at 20:13
  • there are 2 kind of sharing. The Internet/Network and the no Internet/Network = Users of the computer. – Ruskes Aug 31 '14 at 20:18
  • Network sharing. – Nigel Sep 1 '14 at 22:00
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For network sharing you could do following in Terminal.

Assuming you have the file sharing enabled.

Applications using a file reference to your computer can mount a remote disk automatically, as long as the computer is on the network. A command like

netstat -na | grep 548

will list what machine and user is connected by AFP.

If you simply type netstat it will list all active connection.

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