Log in to the system to read the steps:
When a shell process is obtained when logging in to the system, it has three steps to read the environment configuration file:
1. The first thing to read is the global environment variable setting directory /etc/profile, and then read additional setting documents according to its content, such as /etc/profile.d and /etc/inputrc
2. Then go to the user's home directory, read ~/.bash_profile, otherwise read ~/.bash_login, and then otherwise ~/.profile, these three document settings are basically the same, there is a read priority relationship
3. Then go to the user's home directory and read ~/.bashrc
The difference between /etc/* and ~/.*:
/etc/profile, /etc/bashrc are system global environment variable settings
~/.profile, ~/.bashrc are private environment variable settings in the user's home directory
The difference between ~/.profile and ~/.bashrc:
All have personalization features
~/.profile can set user-specific paths, environment variables, etc. It is only executed once at login
~/.bashrc is also a user-specific setting document, you can set the path, command alias, and it will be used once every time the shell script is executed
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Please indicate the author and source for reprinting: http://blog.csdn.net/c406495762/article/details/62902871