Linux Command----directory contents

Show Directory Contents:

ls [option] ... [File] ...

LS is a shorthand for English words, its function is to display the contents of the directory;

By default, the output entries are sorted alphabetically;

When a directory name or file name is not given, the current directory information is displayed.

[option]:

-a lists hidden files in the file with "." Start with hidden files, such as: ~/.BASHRC

-l list File details

-R is listed along with the contents of subdirectories

The information displayed with the LS-L command begins with a 10-character string, where the first character represents the type of file and has the following types:

-Normal file

Catalog D

L Symbolic Link

B-Block device files

C-Character device files

s socket file (network sockets)

P Pipe

The following 9 characters represent the access rights of the file, divided into 3 groups and 3 bits per group. The first group represents the permissions that the file belongs to, the second group represents the permissions of other users in the same group, and the third group represents the permissions of the users of the other groups. Each group of three characters represents the read, write, and execute permissions on the file, respectively. The permissions are as follows:

R Read

W Write

x executable (for directory, access permission)

When the file is executed, the user ID or group ID of the file is assigned to the user ID of the executing process

T set flag bit

-No corresponding permissions

Linux Command----directory contents