How to add a node through command line in WebSphere?

The addNode command incorporates a WebSphere Application Server installation into a cell. You must run this command from the install_root/bin directory of a WebSphere Application Server installation. Depending on the size and location of the new node you incorporate into the cell, this command can take a few minutes to complete.
The node agent server is automatically started as part of the addNode command. If you recycle the system that hosts an application server node, and did not set up the node agent to act as an operating system daemon, you must issue a startNode command to start the node agent before stating any application servers.
Syntax
The command syntax is as follows:

addNode [options]

The argument is required. The default port number is 8879 for the default Simple Object Access Protocol (SOAP) port of the deployment manager. SOAP is the default Java Management Extensions (JMX) connector type for the command. If you install the deployment manager using coexistence ports, the default SOAP port is 8889.