Start up the shared server

Make a subdirectory in which to start up the server and client.

When started, the server creates a large number of database files; it’s best not to clutter your working directory with these files, so we will start up the server and client in a designated directory.

On Unix and macOS
```
mkdir /Users/bruno/server
```
On Windows
```
mkdir C:\Users\bruno\server
```
Start up the shared server.

Start up the shared server, using the -r dir option to specify the directory created in the previous step and the -p port option to set the hostname:port number to localhost:1666, the required setting for running the shared server and the client on same computer.

On UNIX and macOS
```
p4d -r /Users/bruno/server -p localhost:1666
```
On Windows
```
p4d -r C:\Users\bruno\server -p localhost:1666
```
This produces the following output:
```
Perforce db files in 'server' will be created if missing...
Perforce Server starting...
```
Because the shared server runs in the foreground, you must open a new terminal window in which to run subsequent commands.