What does usr mean in linux

In Linux, "usr" refers to the abbreviation of Unix system resources located in the root directory, represented as "/usr". Common subdirectories are: 1. /usr/bin, used to store user executable files binary files; 2. /usr/lib, which stores shared library files; 3. /usr/include, which stores header files for programming languages ​​such as C/C; 4. /usr/local, which stores software and software installed by users themselves. File; 5. /usr/share, stores shared data files.

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

In Linux, "usr" refers to the abbreviation of Unix System Resources. This directory is located under the root directory and is usually represented as "/usr".

/usr directory is where software and files installed by users are stored. It contains many subdirectories, each with its own specific purpose. The following are some common subdirectories:

• /usr/bin: used to store user-executable binary files (executable programs), such as commonly used commands and tools.

• /usr/lib: Stores shared library files and some system-level function libraries.
  

• /usr/include: Stores header files for programming languages ​​such as C/C. These header files are used to reference related function and data structure definitions during the development process.

• /usr/local: Used to store software and files installed by users themselves, rather than content installed through the operating system's default package management system.

• /usr/share: Stores shared data files, such as documents, help manuals, sample configuration files, etc.

In short, the /usr directory plays an important role in storing software and files installed by users in the Linux system. It provides a standardized organizational structure to facilitate management by system administrators and users. and use.

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