Use of Linux stat command

stat [OPTION]... FILE..

-L, --dereference: follow the symbolic link to resolve the original file instead of the symbolic link;
-f, --file-system: Display the file system information instead of the file information;
-c, --format=FORMAT: Output in the specified format instead of the default format;
	The available format control characters for displaying file information are as follows:
	%a: Display access permissions in octal %A: Display access permissions in readable form %b: Display the number of occupied blocks %B: Display the number of bytes occupied by each block %C: SELinux security context string
	%d: Displays the device number where the file is located in decimal format %D: Displays the device number where the file is located in hexadecimal format %f: Displays the file type in hexadecimal format %F: File type. File types under Linux are mainly divided into ordinary files, directories, character device files, block device files, symbolic link files, sockets, etc. %g: file owner group ID
	%G: file owner group name %h: file hard link number %i: inode number %m: mount point of the disk partition where the file is located, such as /data
	%n: file name %N: file name enclosed in single quotes. If it is a soft link, the file name it points to is also displayed %o: optimal I/O transfer size hint
	%s: actual file size, in bytes %t: major device type in hex, for character/block device special files
	%T：minor device type in hex, for character/block device special files
	%u: Owner user ID
	%U: Owner user name %w: File creation time, output - means it cannot be known %W: File creation time, output Unix timestamp, 0 means it cannot be known %x: Output the last access time atime in readable form
	%X: Unix timestamp output last access time atime
	%y: Output the last modification time mtime in readable form
	%Y: Unix timestamp output after modification time mtime
	%z: Output the last status change time ctime in readable form
	%Z: Unix timestamp output last status change time ctime
	
	The available format control characters for displaying file system information are:
	%a: Number of free blocks available to non-super users %b: Total number of blocks in the file system %c: Total number of file nodes in the file system %d: Number of available file nodes %f: Number of available file blocks %i: Hexadecimal file system ID
	%l: Maximum file name length %n: File name %s: Size of a block, in bytes (for faster transfers)
	%S: The basic size of a block, in bytes (used to count the number of blocks)
	%t: Output the file system type in hexadecimal format %T: Output the file system type in readable form --printf=FORMAT: Output in the specified format instead of the default format. Similar to --format, but can interpret backslash escape characters, such as newline characters \n;
-t, --terse: concise mode output, only display summary information;
--help: Display help information;
--version: Display version information.

[root@TENCENT64 ~]# stat Changelog
 File: 'Changelog'
 Size: 1598 Blocks: 8 IO Blocks: 4096 regular file
Device: fd01h/64769d Inode: 1579435 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
Access: 2018-11-06 22:39:54.110931887 +0800
Modify: 2018-11-06 22:39:54.110931887 +0800
Change: 2018-11-06 23:07:14.428548887 +0800
 Birth: -

[root@TENCENT64 /data/vas_pgg_proj/apps/penguin_game]# stat -f Makefile
 File: "Makefile"
  ID: 6f75a4f02634e23e Namelen: 255 Type: ext2/ext3
Block size: 4096 Fundamental block size: 4096
Blocks: Total: 43830967 Free: 30155578 Available: 27923259
Inodes: Total: 11162880 Free: 11077199