bash: Environment file order.

[hoodedvul]

Take into account the main readme for this section. README first.

For more information also see: https://www.gnu.org/software/bash/manual/bash.html#Bash-Startup-Files

Tilde ~ mean your $HOME

The order the bash environment files are read for an interactive login shell.

1. /etc/profile
2. ~/.bash_profile
3. ~/.bash_login
4. ~/.profile

On exit this file is invoked.

~/.bash_logout

The order the bash environment files are read for an interactive non-login shell.

~/.bashrc

There are bash options to change the functionality, see the GNU documenation in the link above.