Basic Structure of linux system and structure of File System (configuration diagram)

The basic structure of the linux System and the structure of the file system (configuration illustration) the linux system includes four major sections of the vLinux kernel v Linux Shellv Linux application v Linux File System: kernel is the heart of the system and implements the basic functions of the operating system. § Hardware: Controls hardware devices, memory management, hardware interfaces, and basic I/O; § software: Manages file systems and allocates memory and CPU time for programs. Shell is the user interface of the system and provides an interface for users to interact with the kernel. § Shell is a command interpreter that explains the commands entered by the user and sends them to the kernel for execution. § The Shell programming language has many features of a common programming language. The Shell program written in this programming language has the same effect as other applications. All standard Linux systems have a set of Assembly called applications. Including: l text editor l programming language l x wl office suite l Internet tool l database and so on Ø the file system is the way to organize files stored on disks and other storage devices. Linux supports a variety of popular file systems, such as EXT2, EXT3, FAT, VFAT, ISO9660, NFS, and SMB. Here I want to talk about file systems, first, the linux File System is a directory structure and a tree structure. The following describes the usage of each file/bin binary executable command/dev special file/etc system management and configuration file/etc/rc. d. Start the configuration file and script/home user home directory base point. For example, if the user's home directory is/home/user, you can use ~ User indicates the/lib standard programming library, also known as dynamic link shared library, which works like in windows. dll file/sbin system management command, which stores the temporary file storage point used by the system administrator/tmp public/root system administrator's main directory (haha, privileged class) /the mnt system provides this directory for users to temporarily Mount other file systems. The/lost + found directory is usually empty, and the system shuts down abnormally, leaving a "Homeless" file (what is it in windows. chk) Here, the/proc virtual directory is the ing of the system memory. You can directly access this directory to obtain system information. /Var the overflow of some large files. For example, the log files of various services/the largest directory of usr, almost all the applications and files to be used are in this directory. Including: /usr/x11r6 stores the x window directory/usr/bin numerous applications/usr/sbin hyperuser management programs/usr/doc linux documentation/usr/include development in linux and the configuration files of common dynamic link libraries and software packages for the header files/usr/lib required for compiling applications