Linux is the most commonly used commands: to solve the problem of more than 95%

Author: frog class network
link: https: //zhuanlan.zhihu.com/p/91908297
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Linux is the most widely used server operating system based on Unix, a free open source, due to the high stability and security of the system, the market share has almost become the best system environment program code runs. linux can not run for a long time we write program code can also be installed in a variety of computer hardware devices, such as mobile phones, routers, Android lowest level program is run on linux system.

A, Linux directory structure

/ Lower directory

bin (binaries) to store binary executable file
sbin (super user binaries) to store binary executable file, only root can access
etc (etcetera) storage system configuration files
usr (unix shared resources) used to store shared system resources
home storage root directory of user files
superuser root directory
dev (devices) for storage of the device file
lib (library) is stored with the file system to run the required shared libraries and kernel modules
mnt (mount) system administrator to install temporary file system mount point
storing boot used for various system boot files
tmp (temporary) for storing all kinds of temporary files
File var (variable) for storing data needed to change the runtime

Two, Linux common commands

Format: command - option parameters (options and parameters can be null)

如：ls -la /usr

2.1 operating files and directories

2.2 system commonly used commands

2.3 compression and decompression

2.4 File Permissions operation

Interpretation description format linux file permissions

r read permission, write permission W, x executable permission (which may be represented by a binary 111 110 100 -> 764)
Bit 1: file type (d directory, - regular files, l linked file)
Bit 2-4: their user rights expressed by u (user)
Bit 5-7: belonging group permissions, denoted by g (group)
Bits 8-10: other user rights, represented by o (other)
2-10 bit: that all the permissions, represented by a (all)

Three, Linux systems commonly used shortcut commands and symbols

Four, vim editor

vi / vim on Linux is the most commonly used text editor and very powerful. Only the command, no menu, the view showing various modes of FIG switching command vi.