linux下stat程序简介

1、简介

stat程序可以显示文件或者文件系统的信息。

2、参数

Usage: stat [OPTION] FILE...

Display file or filesystem status.

-f, --filesystem display filesystem status instead of file status

-c --format=FORMAT use the specified FORMAT instead of the default

-L, --dereference follow links

-Z, --context print the security context information if available

-t, --terse print the information in terse form

--help display this help and exit

--version output version information and exit

The valid format sequences for files (without --filesystem):

%A Access rights in human readable form

%a Access rights in octal

%B The size in bytes of each block reported by `%b'

%b Number of blocks allocated (see %B)

%D Device number in hex

%d Device number in decimal

%F File type

%f Raw mode in hex

%G Group name of owner

%g Group ID of owner

%h Number of hard links

%i Inode number

%N Quoted File name with dereference if symbolic link

%n File name

%o IO block size

%s Total size, in bytes

%T Minor device type in hex

%t Major device type in hex

%U User name of owner

%u User ID of owner

%X Time of last access as seconds since Epoch

%x Time of last access

%Y Time of last modification as seconds since Epoch

%y Time of last modification

%Z Time of last change as seconds since Epoch

%z Time of last change

Valid format sequences for file systems:

%a Free blocks available to non-superuser

%b Total data blocks in file system

%c Total file nodes in file system

%d Free file nodes in file system

%f Free blocks in file system

%C - Security context in SELinux

%i File System id in hex

%l Maximum length of filenames

%n File name

%s Optimal transfer block size

%T Type in human readable form

%t Type in hex

3、示例

1）显示指定文件的状态信息

stat /root/.bashrc

File: `/root/.bashrc'

Size: 470 Blocks: 8 IO Block: 4096 regular file

Device: 301h/769d Inode: 2195486 Links: 1

Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)

Access: 2013-05-27 23:36:35.000000000 +0800

Modify: 2013-04-06 10:37:03.000000000 +0800

Change: 2013-04-06 10:37:03.000000000 +0800

2）显示文件系统状态信息

stat -f /root/.bashrc

File: "/root/.bashrc"

ID: 0 Namelen: 255 Type: ext2/ext3

Block size: 4096 Fundamental block size: 4096

Blocks: Total: 5077005 Free: 4277190 Available: 4015131

Inodes: Total: 5242880 Free: 5132870