Linux common shell commands ls and linuxshell commands ls

Linux common shell commands ls and linuxshell commands ls

Ls: view the file name and directory. Usage: $ ls [Option]

1. $ ls

Directly enter the ls command to list all files and directories in the current directory without displaying details, such as type, size, and date permissions.

2. $ ls-l

-L option. One record is displayed on each line and the file and directory information is displayed in a long list, including the file type, size, modification date and time, permissions, users, and groups.

If the following content is displayed:

Drwxr-xr-x 2 userName groupName 4096 Sep 18 10: 51
Drwxr-xr-x 2 userName groupName 4096 Jul 2 07:47 Documents ents
Drwxr-xr-x 2 userName groupName 4096 Jul 2 07:47 Downloads

-Rw-r -- 1 userName groupName 0 Sep 18 :43 hello.txt

The output line above contains seven fields, each of which has different meanings:

Field 1: file type and permissions. The first character indicates the file type. The specific conditions include: d: Directory;-: common file; s: Socket file; l: Link file.

Rwxr-xr-x indicates the File Permission.

Field 2: Number of links. 1 indicates that only one file is linked to this file.

Field 3: Owner

Field 4: User Group

Field 5: file size, in bytes

Field 6: last modification date of the file

Field 7: File Name

 

3. $ ls-lh

-The lh option can display the file size as a regular reading style, for example:

Drwxr-xr-x 2 lipan 4.0 K Sep 18 10: 51

 

4. $ ls-F

-F option to classify different file types with different special characters

Init/linux-sound-base/ufw/
Klibc-P2s_k-gf23VtrGgO2_4pGkQgwMY.so * lsb/x86_64-linux-gnu/
Libcryptsetup. so.4 @ modprobe. d/xtables/hello.txt

/: Indicates the Directory

@: Indicates the link file.

*: Indicates the executable file.

None: indicates a common file.

 

5. $ ls-R

-R option to recursively list the content of a directory

 

6. $ ls-ls

-Ls option to list files and directories in descending order of file size in long list format)

 

7. $ ls-

-Option a lists all files and directories including hidden files or directories, including "." (current directory) and "." (parent directory)

 

8. $ ls-

-A option to list all files and directories including hidden files or directories, excluding "." (current directory) and "." (parent directory)

 

9. $ ls-n

-N option. output is similar to-l option, but uid and gid are used instead of owner and user group.