"Linux" Linux often uses basic commands

Linux is a lot of frequently used commands are necessary, here will I learn Linux in the introduction of some of the frequently used basic commands to share with you, hoping to help you.

This is the bird in the book I have done a bit, I hope not to deal with copyright issues.

1. Instructions for displaying dates: date

2. Instructions for displaying the calendar: Cal

3. Simple and easy to use calculator: BC

Why would 10/100 become 0? This is because BC presets only output integers, assuming the number of decimal places to output, then you need to run Scale=number, that number is the decimal place, such as:

4. Important several hotkeys [Tab],[ctrl]-c, [ctrl]-d

[Tab] Key---with "command completion" not "file full" function

[Ctrl]-c button---Let the current program "Stop"

[ctrl]-d Key---usually means: "Keyboard input ends (end of File, EOF end ofinput)" meaning; In addition, he can be used instead of exit

5, man

Exit with Q,

Man-f Mans

6. Data synchronously written to disk: Sync

Enter sync, and the data that has not been updated in memory will be written to the hard drive, so this led makes it important before the system shuts down again cookbook. Better run a few more times!

7, the customary shutdown command: Shutdown

In addition, it should be noted that the time of the number of instructions must be increased, otherwise shutdown will jump to Run-level 1 (that is, the single-player maintenance of the login), so it is nerve-racking! Here are some examples of how many time references are available:

Reboot, Shutdown: reboot, Halt,poweroff

8. Switching operation level: Init

There are seven types of Linux operating levels in common:

--run Level 0: Shutdown

--run Level 3: Plain text mode

--run Level 5: Graphics interface mode included

--run Level 6: Start again

Use the init command to switch between the modes:

If you want to shut down, in addition to the shutdown-h now and Poweroff above, you can also use the following instructions to shut down your computer:

9. Change the file's owning group: CHGRP

10. Change the file owner: Chown

He can also change the name of the group directly dwellings

11, change the permissions of the file: chmod

There are two ways to set permissions, respectively, to use numbers or symbols to change permissions.

--Digital Type change file permissions:

--Symbol Type change file permissions:

12, view version number information, etc.

13. Transform folder: CD

14. Show current folder: Pwd

15. Create a new folder: MkDir

It is not recommended to use the-p option frequently, because the worry assumes that you typo, then the folder name will become messy

16. Delete "Empty" folder: RmDir

17. Display of files and folders: LS

18. Copy files or folders: CP

19. Remove files or folders: RM

20. Moving files and folders, or renaming: MV

21. Get path file name and folder name: Basename,dirname

22. Start with the first line to display the contents of the archive: Cat

23. Start from the last line: TAC (can see that the TAC is the cat's backwards write)

24, display the time, by the output line number: NL

25, one page of the contents of the file: more

26, similar to more, but better than more, he was able to page forward: less

27. Just a few lines: Head

28, just look at the end of a few lines: tail

29. Read the contents of the file in binary position: OD

30. Change the file time or create a new file: Touch

31. File Preset Permission: Umask

32. Profile File Hidden properties: Chattr

33. Show file Hidden properties: Lsattr

34. Observation file type: Files

35, look for "operating gear": which

36. Find specific files: Whereis

37. Find specific files: Locate

38. Find a specific file: Find

39. Compress files and read compressed files: Gzip,zcat

40. Compress files and read compressed files: Bzip2,bzcat

41. Compressing files and reading compressed files: Tar

Well, exhausted, and finally finished, hope to be able to help everyone.

"Linux" Linux often uses basic commands