The following files are used to initialise user profiles and can be customised.
User customisable script that runs on logout, typically for housekeeping, for example clearing text present in the terminal screen.
Hidden file, can be edited by user to customise environment variables. Runs on login.
Hidden file, generates items required by each shell, such as aliases and local variables. Runs when a shell is spawned. User customisable.
Global, admin modifiable script that performs tasks on logout, typically cleaning up.
Can only be modified by admin, like ~/.bashrc runs whenever a shell is spawned and affects every user ie Global
Can only be modified by admin and is run by every user on login. Contains key environment variables, sets system values and displays messages. Global.
Directory containing template initialisation files that are provided to users on account creation.