| loading order | which? | who? | when? |
| 1 | /etc/enviroment | system | once |
| 2 | /etc/profile (& /etc/profile.d/*) | all users | once |
| 3 | ~/.bash_profile | ~/.bash_login | ~/.profile | you | once |
| 4 | ~/.bashrc | you | each time |
| 5 | /etc/bashrc | all users | each time |
| 6 | ~/.bach_logout | all users | each time |