Some little-known but interesting Unix/Linux commands (4)

"Some little-known but interesting Unix/Linux commands" series:

1. Some little-known but interesting Unix/Linux commands (1)
2. Some little-known but interesting Unix/Linux commands (2)
3. Some little-known but interesting Unix/Linux commands (3)
4. Some little-known but interesting Unix/Linux commands (4)

　

Some may have some misunderstandings about the value or essence of this series of articles. It is necessary for D guago to clarify this question.

Essence of the article

In January 22, 2013, D guago posted the third article in this series to the homepage of the blog Park. The result may be that this suspect is a reprinted post and the homepage is removed. After communication with the "blog Garden", the article was successfully moved back to the homepage.

The "blog Garden" editor also pointed out that you want to introduce each command more, such as the full name of each command and example of use ...... The edited "blog Garden" also reflected some questions: What is the essence of this series of articles? Where is the value of the article reflected? It is estimated that this is a question shared by many friends who have read this article. In order to make this series of articles play its due role, it is necessary for D guago to describe the value of this series of articles.

This series of posts is actually a question of Quora translation and Arrangement: What are some lesser known but useful Unix commands? To make the post more practical, I searched a lot of materials and added them to the article as "references.The articles mentioned in references are excellent, and they are much better than those of D guago! These references are the essence of the article!The introduced command is just an introduction. I hope that you will be interested in Linux to learn more. The value of this series of articles is embodied here.

Of course, the first article in this series failed to reflect the "Article value" explained here because it was not well positioned at the time ". D guago wrote this series of articles and then came back to fix the flaws in the first article!

In the fourth article in this series, Dr. D will continue to introduce some interesting Unix/Linux commands.

Interesting commands

1. Fortune,Every time you run this command, an interesting sentence or an interesting Q & A will be given. You can learn English, enjoy and entertain yourself! Haha
2. Sl,This command is very interesting. You can get a steam locomotive directly. Who can play!
3. Sudo !!,Execute the last command as the root user. This is very useful! Strongly recommended...
4. Cat </dev/tcp/domain-or-ip/port-here,You can create a one-time TCP Socket link;
5. Tree,Present the current directory and all sub-directories in the form of a tree
6. Pv,That is, Pipe Viewer. view the execution of commands that have been running for a long time.
7. Ncdu,That is, NCurses Disk Usage, recursively displaying the Disk space occupied by each file (or folder;
8. Fdupes,Find and delete duplicate files;
9. Find,It is used to search for files and provides many unexpected functions;
10. Sdiff,Merge the differences between files in a side-by-side manner;
11. Base64,The data (text, binary files, etc.) is interpreted as strings in Base64 encoding and then output;
12. Nice,Run the command with a specified priority. If no priority is specified, the program displays the current priority;
13. Uname,Output a set of system information. If no parameter is added, only the kernel name is displayed;
14. Setfacl,Sets the File Access Control List;
15. Tee,Redirects standard input to a file or standard output;
16. Mc,Midnight Commander (MC) is a "Swiss Army Knife" in the Linux console and other terminal environments. It is a very convenient File Manager, which is equivalent to the Total Commander in Windows.
17. Beep or "echo-e '\ a'>/dev/console ",A computer sends a beep to warn a computer user. For example, a command is not completed.
18. Mesg,Control whether other messages can be sent to your terminal interface
19. Write,Send messages to other users on the computer (ending with Ctrl + D)
20. Wall,Send a message to all users of the computer;

 

References

1. Unix Tree/Linux Tree
2. Diff, sdiff, cmp, comm are different than swap files.
3. Differences between directories and files in linux diff sdiff
4. Sdiff
5. Base64 of Linux commands I have used-base64 encoding/Decoding
6. Linux commands-nice
7. Uname commands in Linux
8. Laruence: Linux zookeeper management and ACL permission settings
9. Use setfacl and getfacl in linux
10. Linux tee commands
11. Linux MC-terminal Environment File Manager
12. Linux mesg command usage
13. How to Use the Linux write command
14. Linux Command System Management wall, write, mesg, sync, shutdown, free, uptime