Linux Basic Knowledge Collection

First, the system level of Linux

4 applications

3 Library

2 cores

1 hardware

When running the program, the application is dispatched to the hardware execution by the kernel;

Third, the user interface

1 CLI Command Prompt

Shell type: sh,csh,tcsh,bash,ksh,zsh

2 GUI graphical interface, common to have (Ubuntu contains these three distributions):

GNOME:C development, GTK framework;

kde:c++ Development, QT framework;

XFCE: Lightweight Desktop.

Iv. type of terminal

1 6 Local virtual terminals:/dev/tty#

CTRL+ALT+F1-F6 switching

2 Remote connection pseudo terminal:/dev/pts/#

3 Physical Terminal:/dev/console

That is, the video card is displayed by local monitor;

4 Serial Terminal:/dev/ttys#

Serial VGA interface

5 Graphics Terminal

First through the command: StartX & (or StartX--: 2 &) installation program;

Again Ctrl+alt+f7

Five, the catalogue is divided into

Working directory

Current directory

Home Directory

File system

1 Strict case sensitivity

2 hierarchical structure represents file path, inverted tree

3 namespaces can be different names

4 File Space: Rootfs

This article is from the "Squirrel" blog, please be sure to keep this source http://apinetree.blog.51cto.com/714152/1651250

Linux Basic Knowledge Collection