Linux basic command-ls

Linux does not understand basic commands.

Linux is a multi-user, multi-task operating system. windows is also. however, Windows is generally used by a single user. few people use a single machine at the same time. (Windows Server 2003 can be used to enable multiple remote terminals. I have used it .)

 

Absolute path and relative path

Absolute path-start with/, for example,/home/user1/abc.txt

Relative Path-None/start with. user1/abc.txt

If the current path is home, the above example is/home/user1/abc.txt. If it is in Bin, the above example is/bin/user1/abc.txt.

 

Help

Simple help: Add -- help after the command

-A, like -- all, is short and full.

Another help: add the command after help.

For example, help CD

The most detailed help: Man

For example, man ls will display detailed help information about ls commands on the screen. If there is too much content, press enter to roll down a single line, Press space on a single page, and press Q to exit.

 

Tips on the tab key: complete the command.

If you forget the spelling of a command and make as many letters as possible, you can press the tab key to complete it automatically.

 

LsReturns all sub-files and sub-directories in the directory.

Ls-lReturns detailed information about all sub-files and sub-directories, including the Creation Time, user name, user group name, and length.

Ls-Return all sub-files and sub-directories in the directory, including hidden files. Note that all files and folders with A. header in Linux are hidden.

Ls -- color

DIR is a command in windows, and Linux also introduces it.

Different folders have different colors, because the LS command we run is actually ls -- color.

The alias command can be used to view the abbreviation. If we enter alias ls once, we will find: alias ls = 'ls -- color = auto'

When setting, alias ls = "ls-L" is available"