Positioning system environment variables
Three ways to start the bash shell :
- As a default login shell when log
- The default on the / etc / profile bash shell system master boot file, every user on the system will execute the startup file when landing
- $HOME/.bash_profile
- $HOME/.bashrc
- $HOME/.bash_login
- $HOME/.profile
- As a non-interactive shell login shell
- As a non-interactive shell running the script
