Shulou(Shulou.com)06/01 Report--

This article will explain in detail what terminal commands are commonly used in Linux. The editor thinks it is very practical, so I share it for you as a reference. I hope you can get something after reading this article.

1. Command line daily shortcut keys

The following shortcuts are very useful and can greatly improve your productivity:

Content before 2CTRL + U-cut cursor 3 4CTRL + K-cut cursor to the end of the line 5 6CTRL + Y-paste 7 8CTRL + E-move the cursor to the end of the line 910CTRL + A-move the cursor to the beginning of the line 1112ALT + F-jump to the next space 1314ALT + B-jump back to the previous space 1516ALT + Backspace-delete the previous word 1718CTRL + W-cut the first word 1920Shift + Insert- Paste the text 21 messages' into the terminal

So to make the above easier to understand, take a look at the following line of command.

1sudo apt-get intall programname

As you can see, there is a spelling error in the command, and "intall" needs to be replaced with "install" in order to execute properly.

Imagine that now that the cursor is at the end of the line, there are many ways to return it to the word install and replace it.

I can press ALT+B twice so that the cursor will be in the following position (here refers to the location of the cursor).

1sudo apt- Get ^ intall programname

Now you can press the arrow keys twice and insert "s" into the install.

If you want to copy the text from the browser to the terminal, you can use the shortcut key "shift + insert".

2.SUDO!!

If you don't know this order, I think you should thank me, because if you don't know, you will be miserable every time you see "permission denied" after entering a long list of commands.

How to use sudo!? It's simple. Imagine that you just entered the following command:

1apt-get install ranger

There is bound to be a "Permission denied" unless you have logged in to a highly privileged account.

Sudo!! The last command is run in the form of sudo. So the last order went like this:

1sudo apt-get install ranger

(warning! The master of the home page strongly opposes the use of this command, because if there are some clerical errors in the last command or you are wrong about which one is the last command, then the consequences may be catastrophic! Therefore, do not carry out this order! Never carry out this order! Never carry out this order! Repeat the important things three times.)

3. Pause and run the command in the background

CTRL + Z-pause the application

Fg-call the program back to the front desk

How to use this technique?

Imagine you are editing a file with nano:

In the middle of editing the file, you realize that you need to type some commands on the terminal right away, but nano runs in the foreground so that you can't type.

You may think that the only way is to save the file, exit nano, and reopen nano after running the command.

In fact, as long as you press CTRL + Z, the command of the front desk will be paused and the screen will switch back to the command line. You can then run the command you want, and type "fg" in the terminal window after the command has been run to return to the previously paused task.

One interesting attempt is to open a file with nano, type something, and then pause the session. Then open another file with nano, type something, and then pause the session. If you type "fg" you will return to the second file opened with nano. Only by quitting nano and typing "fg" will you return to the * files opened with nano.

4. Use nohup to still run commands after logging out of a SSH session

The nohup command is really useful if you log in to another machine with ssh.

So how do you use nohup?

Imagine you use ssh to remotely log in to another computer. You run a very time-consuming command and then exit the ssh session, but the command is still being executed. And nohup can make this scene a reality.

For example, I used my raspberry pie to download the distribution for testing purposes. I would never give my raspberry pie an external monitor, keyboard or mouse.

I usually use SSH to connect to raspberry pie from my laptop. If I use raspberry pie to download large files without nohup, I have to wait until the download is complete before I can log out of the ssh session and turn off my laptop. But if so, why would I use raspberry pie to send down documents?

The method of using nohup is also simple, as in the following example, enter the command to be executed after nohup:

5. Run the Linux command at a specific time of (at)

The nohup' command is useful when you use SSH to connect to the server and keep performing pre-SSH logout tasks.

Think about what happens if you need to execute the same command at a specific time.

The command 'at'' will solve the situation properly. The following is an example of the use of at'.

1at 10:38 PM Fri23at > cowsay hello45at > CTRL + D

The above command runs the program cowsay at 10:38 on Friday afternoon.

The syntax used is to append date and time after 'at'. When the at > prompt appears, you can enter the command you want to run at that time.

CTRL + D returns to the terminal.

There are also many date and time formats that you need to flip through 'at' 's man manual to find more ways to use it.

6.Man manual

The Man manual will outline the use of commands and parameters and teach you how to use them. The Man manual looks dull and dull. I thought they were not designed to entertain us either.

But that doesn't mean you can't do something to make them more beautiful.

1export PAGER=most

You need to install 'most';' she will make your man manual more colorful.

You can set the specified governor for the man manual with the following command:

1export MANWIDTH=80

* if you have an available browser, you can use-H to open any man page in the default browser.

1man-H

Note that the above command only works if you set the default browser to the environment variable $BROWSER.

7. Use htop to view and manage processes

Which command did you use to find out which process is running on the computer? I bet it's' ps' and add different parameters to it to get the different output you want.

Install 'htop'! It's definitely too late for you to meet.

Htop presents processes as lists in the terminal, somewhat similar to the task manager in Windows. You can use a combination of function keys to switch between the arrangement and the items displayed. You can also kill the process directly in htop.

Simply type htop in the terminal and run it.

1htop

8. Browse the file system using ranger

If htop is a good helper for command-line process control, then ranger is a good helper for command-line browsing of file systems.

You may need to install it before using it, but once installed, you can start her by typing the following command on the command line:

1ranger

In the command line window, ranger is very similar to some other file managers, but compared to the upper and lower structure layout, it is left and right structure, which means that you press the left arrow key you will move to the previous folder, while the right arrow key will switch to the next one.

Ranger's man manual is worth reading before using it, so you can use keyboard shortcuts to manipulate ranger.

9. Cancel the shutdown

It was only after shutting down the command line or the graphical user interface that I realized that I didn't really want to turn it off.

1shutdown-c

It is important to note that if the shutdown has already begun, it may be too late to stop the shutdown.

Here is another command you can try:

1pkill shutdown

10. A simple way to kill a pending process

Imagine that the application you are running is frozen to death for no reason.

You can use'ps-ef''to find the process and kill or use 'htop'.

There is a faster and easier command called xkill.

Simply enter the following command in the terminal and click on the application you want to kill in the window.

1xkill

What if the whole system goes down?

Hold down 'alt'' and 'sysrq'' on the keyboard, and then slowly enter the following keys:

1REISUB

In this way, your computer can restart without pressing the power button.

11. Download Youtube video

Generally speaking, most of us like to watch Youtube videos and stream Youtube through our favorite players.

If you need to be offline for a period of time (for example, during a flight from southern Scotland to southern England), you may want to download some videos to your storage device and watch them in your spare time.

All you have to do is install youtube-dl from the package manager.

You can use youtube-dl with the following command:

1youtube-dl url-to-video

You can click the sharing link on the Youtubu video page to get the url of the video. Simply copy the link and paste it to the command line (use the shift + insert shortcut key).

This is the end of this article on "what are the common terminal commands in Linux?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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