All kind of installations and configurations including de-installation of Oracle RAC or Database, we can perform using either GUI or Silent mode. GUI mode is more easier as it shows all option (with details) step by step but it may not possible for all the cases or may not support on environment. So we can use all oracle provided tools/utility with silent mode which is more faster and you will able to do this by using putty.
To run any tools with silent mode, DBA should have good understand for each parameter.
For any oracle command which runs using OS command like rman or expdp can get help with tool_name -help. So you don’t need to memorize parameters/options for these tools.