Linux commands (i)

When you need to connect to Linux with Xshell:

First in Terminal input command: Service sshd start (SSH service enabled)

1, NETSTAT-TNL: View the port Status of the command (such as View 22 port)

2. Service sshd stop: close SSH service

Service sshd Restart: Restart SSH service

Service sshd Status: After service is turned on, check the status of services

3. Yum Install Openssh-server: Installing SSH

4. SS-LNT: Check Port Status Command

5, Chkconfig sshd on:ssh service boot automatically start

6, Chkconfig sshd off: Cancel boot from boot

7. Firewall:

View Firewall: Service iptables status

Shut down firewall:/etc/init.d/iptsbles stop

Open firewall: Service iptables start

8. Ps-e|grep SSH: Check if the Ssh-server server is installed

9, Ifconfig-a: Get the IP address of the Linux system

10. PWD: View current directory;/Representative root directory

Parameters:

-P: Display the correct full path

11. CD: Switch directory (change directory)

Parameters:

CD ~ or CD: means back to your home folder

CD ~vbird: Means go to vbird this user's home folder

CD-: Indicates back to that directory just now

Cd.. /: Return to previous level directory

Cd/var/spool/mail: The absolute path, directly specify the full path name to go to

Cd.. /mqueue: Relative path notation, we are from/var/spool/mail to/var/spool/mqueue.

11. LS: View files and directories

Parameters:

-L: Lists current directory information, long data, including file attributes and permissions

-A: Show all files together with hidden files (.)

-D: Lists only the directory itself, not the data in the directory

-R: Together with subdirectories, all files in that directory will be displayed (./: indicated in the current directory)

Ls-al--full-time--~: Full Render File modification time

LS-LH: User-friendly display file size

12. Vim. Test: Create a hidden file

To edit a file:

Vim file name

Press I to insert mode, after writing the file, press ESC, then press SHIFT +: Key, then enter Wq, then hit enter, the file is saved.

13. cat file Name: View file contents (Show all contents)

Parameters:

-B: Lists line numbers, but blank lines do not mark travel numbers.

-N: Print travel number, blank line also has

14, more file name: (one page, one page) slowly view the content

SPACEBAR: Represents PAGE Down

Enter: represents scrolling down one line

/string: Represents the keyword in this reality that queries down "string"

Q: The delegate immediately leaves more and no longer displays the contents of the file

B: The representative page back

15. mkdir Directory Name: Create a new directory

Parameters:

-P Cn/jilin/changchun/yushu/baoshou: Creating a directory recursively

-M 711 test2: New directory with permissions of Rwx--x--x

16, RmDir: Delete "Empty" directory

Parameters:

-P: Along with the previous layer "empty" directory also deleted

-R: Delete everything under the directory

17. MV: Move files and directories, or rename

Mvdir filename Directory Name: Move the file into the directory

18, Tree cn: Display the CN directory of the Trees structure

Linux commands (i)