Grant and Revoke SQL Server User Login without wizard

To Grant and Revoke SQL Server User Login witout wizard,SQL server provides the built in stored procedure named sp_grantlogin and sp_revokelogin,this store procedure takes the loginname as parameter
 
syntax for grant login
  1. exec [sys].[sp_grantlogin] 'UserLoginName'
 syntax for revoke login
 
  1. exec [sys].[sp_revokelogin] 'UserLoginName'