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P4 CLI Documentation | 2025.1

# Log in to the P4 Server

Typically, your administrator starts up a P4 Server that you can use. If you need to start up your own P4 Server, see Start a P4 Server.

Your admin provides you with a user id, a password, and the server’s address. You then follow these steps:

1. Set the P4PORT environment variable to the server address the admin gave you.

   Suppose the server is running as `server1` on port 1666. To enable the client to communicate with the server, set the client’s `P4PORT` variable to `server1:1666`.

   On UNIX and macOS

       export P4PORT=server1:1666

   On Windows

       p4 set P4PORT=server1:1666

2. Log in to the server with the `p4 login` command.

       p4 login

   P4 Server displays the following:

       Enter password:

3. Enter the password your admin gave you.

   P4 Server displays the following:

       User bruno logged in.

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