Linux one step---ls command

# # #以下使用的部分路径参数禁止未成年人观看 # #

1 command function (brief description):

Lists all files and directories under the current directory or in the specified directory , and LS is the abbreviation for list.

2 Command syntax:

ls "option" "Directory Name" #注: "" In the content is not required option

3 command options (only common command parameters are described):

-a lists all files in the directory, including hidden files that begin with the. -A equals to--all

-a shows. and. All files except the.

-D Displays the directory's own properties without displaying the files under the directory.

-l list details of directories or files

The-H and-l parameters are used to display the file size in a human readable manner, and more humane display results, such as 1k,2m,3g

-I displays inode information for a file or directory, that is, index information

-T sort by modified time display file or directory (time from near sort)

-s sort by file size, from large to small

-R used with other parameters to reverse the sort

--color=auto let the content of the output display color according to the category (there are also parameters in grep)

4 Usage Examples:

• Displays all files under the specified directory, using Ls-al to specify the path directory, listing/home/japan directory file information

• Displays all files (including hidden files) under the current directory, using LS-A to list/home/japan directory file information

• Displays details of all files and directories in the/home/japan directory, using Ls-al, to list/home/japan directory file details

Ls-al the results of the display

First column: 1 The first letter of D means that the content is a directory, such as the Linux directory in, the first letter is - when the content is a file, such as in the Happy.txt; the first letter is l means that the content is a linked file.

2 The following 9 characters represent the permissions of the file or directory, the letter R W x represents the Read, write, execute permission, respectively, the corresponding permission number is 4 2 1. The first 3 represent the permissions of the file or directory that have this permission, and the last 3 represent the permissions of all the groups in the file or directory, and the other person's access to the

Second column: The number of links representing a file or directory, that is, the directory or file contains several directories or the number of files.

Column Three: Represents the owner of a file or directory.

Column Fourth: All groups representing the file or directory.

Fifth Column: Represents the size of a file or directory, in bytes (byte)

Sixth column: Represents the last modification time of a file or directory (using [Stat file name or directory name] to view the access time of a file or directory access, the modified time of a file or directory modify, the change in the state of a file or directory)

Seventh: Represents the file name or directory name

• Lists the directory details under the current directory without displaying the files, available through the ls-d */command, such as listing directories under the/home/japan directory

• Displays the Inode (index) information for a file or directory under Directory/home/japan, via the Ls-il command, such as displaying files or directories under/home/japan

• The display is sorted by the LS-LT command, such as displaying files or directories under/home/japan.

• Reverse Sort by modification time, by ls-ltr command, such as displaying files or directories under/home/japan

• Sort from large to small according to the size of the file, you can use the LS-SL command, such as displaying files or directories under/home/japan

• Sort from small to large according to file size, through LS-SLR commands, such as displaying files or directories under/home/japan

Linux one step---ls command