Aspects of the invention are directed towards an apparatus and method for executing operation/s on device/s. One or more embodiments of the invention describe the method comprising steps of receiving a voice command from a user for enabling one or more devices to execute an operation and determining validity of the voice command received from the user. The method further describes steps of converting the voice command to a generic command based on the validity of the command and transmitting the generic command for enabling the one or more devices to execute the operation.