Common commands in ubuntu (1) and Common commands in ubuntu (

Common commands in ubuntu (1) and Common commands in ubuntu (

1. view the directory Ctrl + L

2. Under the terminal:
Copy the command: Ctrl + Shift + C.
Paste command: Ctrl + Shift + V combination key.

3. Decompress tar xzf flie.tar.gz

4. mkdir folder --/create a folder
Rmdir empty folder name --/delete an empty folder
Rm file name --/delete one or more files
Rm-rf non-empty folder name --/delete everything in a non-empty folder
If you cannot delete or create a folder, you can use the sudo command, such as The sudo rm-rf folder name.
You can also su root first, and then perform the operation with the root permission.

5. First, opt is a system folder, which requires certain permissions to be protected.
1. Open the terminal and enter the following command.
2. sudo chmod 777/opt and press Enter. At this time, the system will prompt you to enter the administrator password, so that opt can create a file.
3. Use the cp command to copy the file to the/opt folder.
Cp/home/abc/opt
In this way, copy the abc file in the home folder to/opt.

6. Create a Super User
Sudo passwd root
7. Switch users
Su User Name

8./mnt/hgfs
"On the Option page in VM-> Setting, set Shared Folders to enable. This function can mount the directory on the host to the/mnt/hgfs directory on the Guest"

9. sudo apt-get update (update source)

1. Confirm to install sshd:

$ Sudo apt-get install openssh-server

2. Start sshd:

$ Sudo net start sshd

3. Check the firewall settings and disable the Firewall:

$ Sudo ufw disable

Inspection Method:
Enter the following command:

$ Ssh localhost

Note: Subsequent Updates ...............