If you have logged into the system then what you (should) see is the shell prompt. Configuration is globally defined in resource files in /etc and can be changed globally or overridden by sourcing personal resource files. For your shell (`echo $SHELL`) see the manual page and look for either the term "prompting", or "prompt" or any text near variable names like PS1, PS2, PS3, PS4, else search LQ for terms like "change prompt" or see for example
Understanding Shell Prompts,
How to change your shell prompt or
How to: Change / Setup bash custom prompt (PS1).