Linux Skill Points

Linux Skill Points: System management, network management, file operations, user management, file permissions, software management, other commands.

System Management (operating status, switching machine, directory)

Operating Status: 0 halt shutdown

1 Single user mode

2 Multuser Multi-user with no network

3 Full Internet-capable multi-user

4 Unused unused

5 XLL Desktop Environment

6 reboot Restart

Id:3:initdefault means 3 of the operating state, changing the value can change the operating state, 0 and 6 is not available.

Switching machine: Shutdown restart

Power off Personal User

For shutdown administrators

Inito

Restart reboot??????

Directory:/: Root directory

The directory where the/:bin executable command is located

/:sbin executive commands for super users

/:boot Boot to Directory

/:dev Device File Move disk

/:ETC profile File

/:home home directory for ordinary users

/:root home directory for super users

/:lib Library file or module

/:lost-found system crash-generated files

/:media and Mut mount directory for external devices

/:opt configuration directory for software Installation

/:proc Process Resource Information (resource Manager)

/:selinux file access control management configuration directory

/:sys module/configuration file for the system

/:tmp temp File

/:USR Install the Software directory

/:var log, mail, site data (Dynamic Data)

/:swap virtual memory (use disk as memory)

Network management: Network Status View: Ifconfig ifconfig-a is to view all networks

Activating network: IFUP (device name) such as Ifup eth0

Uninstalling network: Ifdown (device name)

Check network: Ping like ping.www.baidu.com Note: ping-(numeric) is the number of executions Ctrl + C is the end operation

Command format: "option" "Arg1 arg2 ..."

Help: Man command (man is the meaning of manual)

Installation: Yum-y Install man (Ubuntu installation is apt-get-y installed man)

Frequently used arrows: Up ARROW: Flip up one line, down ARROW or ENTER: Turn down one line; Spack SPACEBAR: Page DOWN; b: Page up;

Tab: Fast fill up to two times Q: Launch

Under: Press/Enter the string you want to find such as:/directory can find out all the relevant character information

In the related string isolated N: Find the next place; B: Find the previous; Q: Exit

CTRL+ALT+F1.......F7 can switch between desktop and terminal

~ Directory # Current user is super user

J Home Directory

Cat/etc/init are read files, directories, initialization

Putty: remote virtual machine via IP address.

Linux Skill Points