Linux manual-man

All the students who have studied Linux should know about it. If there is a problem, find man ).Man is short for manual (operation instructions)But it is not easy to use.

For example, execute"Man date", You can see a lot of English instructions on the" date "command. Just like this (listing only a small part of the beginning is actually very long ):

This screen interface is called man page.The command usage and related parameter descriptions are displayed.

So far, the above content is very common.

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• Why is "date (1 )"?

We know that date is the command name. So what does (1) mean? It represents "commands that can be used by general users ". The number after the data query is meaningful. It can help us understand or directly query the relevant information. The meanings of each number are as follows:

• 1. commands or executable files that can be operated by the user in the shell Environment
• 2. system kernel callable functions and tools
• 3. Some common functions and libraries, most of which are C function libraries (libc)
• 4. Description of device files, usually files under/dev
• 5. The format of the configuration file or some files
• 6. Games)
• 7. Conventions and protocols, such as Linux file system, network protocol, and ASCII code
• 8. management commands available by the system administrator
• 9. Files related to Kernel

You can enter"MAN 7 man"Command to get more detailed instructions.

In these numbers,Numbers 1, 5, and 7 are particularly important.Please read it three times in your mind ~~~

In addition, you can see2, 3Now,ProgramEmployeeDo you know what it is ~

• What buttons can be used in man page?

In addition to turning pages up and down, the man page can also use "/string" or "? String to query the string, and use N (or N) to continue to query the next (or previous ).

And press Q to exit...

Well, after knowing the above content, what else do you know? Let's go to man ~