Linux Command Learning (1) -- ls command, linux Command learning ls

Linux Command Learning (1) -- ls command, linux Command learning ls

The first thing you need to know is the command prompt.

[Root @ localhost ~] #

Current login user (root)

Host Name (localhost)

Current Directory (Home Directory)

Super User prompt (#)

Normal user prompt ($)

 

1.1 Command Format

Command [Option] [parameter]

Note: Some commands are not in this format.

Multiple options can be written together

Abbreviated option-a is equivalent to -- all

 

1.2 several simple common commands

Command 1: ls [Option] [file or directory]

Command: Query contents in a directory

Option:

-A: displays all files, including hidden files (abbreviated as -- all)

-L display details

-D. view directory properties.

-H humanized display file size

-I: Display inode (index node)

Ls-a displays all files. Files starting with. are hidden files.

Ls-l permission reference count the last modification time of the file size of the group to which the owner belongs

 

Permission: 10 digits

First: file type (-file; d directory; l soft link) in addition to (Block device files, character device files, socket files and pipeline files)

Rw-r -- r-x (r-read, w-write, x-execution)

U owner g owner group o others

Ls-d