`~/.bash_profile`
`~/.bash_profile` is a **user-specific startup script** executed **automatically when you log into a Linux system** via SSH or console.
`/etc/bash.bashrc`
1. Understand the **role and function** of `/etc/bash.bashrc` in the Bash environment.
`~/.bashrc`
1. Understand the **purpose and behavior** of the `~/.bashrc` file.
` /etc/profile`
1. Understand the **purpose and role** of `/etc/profile` as a system-wide configuration file.
`~/.bash_aliases`
`~/.bash_aliases` is a **user-specific configuration file** designed to store command aliases separately from `.bashrc`.
`~/.bash_logout`
1. Understand the **purpose** of `~/.bash_logout` and when it executes.