What is the difference between .bashrc and .bash _ profile in Linux

This article mainly introduces what is the difference between .bashrc and .bash _ profile in Linux. It is very detailed and has certain reference value. Friends who are interested must finish reading it.

Interactive Login and Non-Login Shell

When Bash is called, it reads and executes commands from a set of startup files, depending on whether Shell is invoked as an interactive login call or as a non-login Shell.

In fact, Shell can be interactive or non-interactive. To put it simply, interactive Shell is a kind of Shell that reads and writes user terminals, while non-interactive Shell is a completely terminal-independent Shell. It is worth noting that the interactive Shell can be either a login Shell or a non-login Shell.

There are several situations where login Shell can be called, either when the user logs in remotely to the terminal via ssh or locally, or when the-- login option is used to launch Bash. For example, when you type bash at the Shell prompt or open a new Gnome terminal tab. The interactive non-login Shell is called from the login Shell.

Bash startup file

When Bash is called as an interactive login Shell, it looks for the / etc/profile file and, if it exists, it runs the commands listed in the file. Bash then searches for ~ / .bash_profile, ~ / .bash_login, and ~ / .profile files in the following order and executes the command in the first file found.

Differences between .bashrc and .bash _ configuration files

When Bash is called as an interactive login Shell, the .bash_profile is read and executed, while .bashrc is executed when the interactive non-login Shell is started. You typically use .bash _ profile to run commands that run only once, such as commands that run the custom environment variable PATH.

Each time you start a new Shell, you should put the commands you run in a .bashrc file, including aliases and functions, custom prompts, history customization, and so on.

Usually, ~ / .bash_profile contains commands from .bashrc files, as shown in the following example:

This means that each time you log in to the terminal, the above two files are read and the commands in them are executed.

Most Linux distributions use ~ / .profile instead of ~ / .bash_profile. Because ~ / .profile files can be read by all Shell, while ~ / .bash _ profile can only be read by Bash Shell.

If you don't have the startup files I mentioned above on your system, you can also create them yourself.

These are all the contents of this article entitled "what's the difference between .bashrc and .bash _ profile in Linux". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!