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Wait, is it necessary to remember so many shortcuts? It's so complicated! We strongly recommend that you remember to significantly improve operational efficiency. And this is the key binding of the ReadLine control, which you can use in any program that uses the ReadLine control. For example, Bash, lftp, gdb and other programs, and Linux, the most famous Emacs editor, but also this style of the key binding (in fact, the ReadLine using Emacs-style key binding to), and even Firefox, can also use similar style of shortcut keys ...

Here are two of the two tips that are often used in Linux systems: 1. Abort a running program if a command lasts a long time, so that it cannot do anything else, you can use CTRL + C to force it to abort. 2, CTRL out of the accident, sometimes you will press CTRL this key combination, the shell is frozen. Try using the CTRL key combination to see if you can return to normal.

Function: Mount command. Common parameters:-T prompt mount–t file type device Path example sometimes you can hang it without specifying it.

Function: Change the user who owns the file or directory. Common parameter hint: chown belong to user file or directory name. Example to change the time to enter passwd this file to see what users.

Well, now that we've changed a remote, it feels a lot better. Now to practice, download a mp3: We use wget this program, it is very reliable, fully worthy of your trust. First find a can download the address, copy the link, in the terminal window click the middle mouse button, paste it in. Now the terminal is probably the case: Http://www.download.net/xxx.mp3 pressed the CTRL + a combination key, we found the cursor moved to the beginning of the line. Enter wget and Space WG ...

Function: Statistics The amount of space that a directory or file occupies on a disk. Common parameter hint: du [parameter] name example:-a-b

Function: Change the group to which the file or directory belongs. Commonly used parameter hint: CHGRP belongs to the group file or directory name example change time enters/etc/group to see what group.

You can use the command man or info to read the online documentation for the Linux command. The format of the command is very simple: man xxx most of the command manual for the English version, if your English is not very good, perhaps some difficulties. In the following system administration chapters, we will try to show you how to use the commands. TIP: When using the "man" browser, some shortcuts you might use: Ctrl (Orward) down one page Ctrl (own) down half page ctrl+b (ackw ...

function: Check the space occupancy of the file system. Commonly used parameters prompt df [parameter] example parameter is not written.

Function: Change permission command. Common parameters: (1= executive Right 2= write right 4= read right 1+2=3 execute and write right, etc.) Hint: chmod parameter file or directory name example this command has other ways to modify the permissions. But I'm used to this.

Features: Displays kernel information. Tip: DMESG |grep long connect |grep command to find the device. Examples of commonly used parameters

Function: Show the user this time and once the login. Common parameter hints last example

Function: Displays the path where the command is located. (See for yourself) Common parameter hints: Type command example

Function: Abort process command. Common parameters prompt Kill [PID] example when the process is stopped. I don't care what's wrong with the system.

Function: Displays its own user name. Common parameter hints; whoami example

Function: Determine the file type. Common parameter hints: file [parameter] filename example

Features: Displays program commands. Common parameters:-a-u-x Example

function: What to do after landing a common parameter tip w Example

Features: Display text. Common parameters:-N-E hint: echo [parameter] string example

Features: Displays program processes. Common parameter Hints