Linux command--bash Shell configuration

I. Type of shell

In terms of user login, the shell type is:

1. Login Shell: (read environment configuration)

Log in normally via a terminal:

Su-username

Su-l USERNAME

2, non-logon shell: (do not read the environment configuration)

Su USERNAME

Command window open under graphical terminal

Shell scripts that are executed automatically

2. Bash configuration file:

Global configuration:

/etc/profile,/etc/profile.d/*.sh,/etc/bashrc

Personal configuration:

~/.bash_profile,~/.bashrc

The above configuration can be divided into two categories:

profile class Files: setting environment variables

Run command or script (when user logs in)

BASHRC class files: setting local variables

Defining command aliases

How does the login shell read the configuration file?

/etc/profile--/etc/profile.d/*.sh--- ~/.bash_profile --~/.BASHRC---/ETC/BASHRC

How does a non-logon shell read a configuration file?

~/.BASHRC--/ETC/BASHRC-/etc/profile.d/*.sh

Linux command--bash Shell configuration