Linux installation and directory introduction - Linux learning (1)

Linux Command Line Tricks

Linux background introduction

1. Linux version

1. Kernel version: www.kernel.org (major version number, minor version number, last version number)
2. Distributions:
   1. RedHat Enterprise Linux (stable, tested version. Charged)
   2. Fedora (community free version)
   3. CentOS (free, stable version)
   4. Debain, Ubuntu desktop version

2. Linux installation

1. Install a virtual machine: VirtualBox and VMvare
2. Install the Linux CentOS operating system on the virtual machine download address
3. Network connection settings:

   1. Bridge mode: directly connected to the physical network (the virtual host is equivalent to an independent computer)
   2. NAT mode: used to share the IP of the host (external terminals cannot access the virtual machine)
   3. Host-only mode: private network shared with the host (virtual machines cannot access external networks)

4. Adjust the graphical interface to the command line mode:init 3
5. User difference: [Ordinary user] $[Super user]#
6. Common Directory Structure

   1. /Root directory
   2. /root rootuser's home directory
   3. /home/usernameNormal user's home directory
   4. /etcconfiguration file directory
   5. /bincommand directory
   6. /sbinDirectory of administrative commands
   7. /usr/bin/ /usr/sbinOther commands pre-installed on the system

7. shutdowninit 0