NET SESSION lists or disconnects sessions between the computer and other computers on the network. When used without options, ...

NET SESSION lists or disconnects sessions between the computer and other
computers on the network. When used without options, it displays information
about all sessions with the computer of current focus.

This command works only on servers.

\\computername  Lists the session information for the named computer.
/DELETE         Ends the session between the local computer and
                computername, and closes all open files on the computer
                for the session. If computername is omitted,
                all sessions are ended.
/LIST           Displays information in a list rather than a table.

NET HELP command | MORE displays Help one screen at a time.