Linux系统之stat命令的基本使用

[root@RockyLinux-server001 ~]# stat  --help
用法：stat [选项]... 文件...
显示文件或文件系统的状态。

必选参数对长短选项同时适用。
  -L, --dereference     跟随链接
  -f, --file-system     显示文件系统状态而非文件状态
      --cached=MODE     specify how to use cached attributes;
                          useful on remote file systems. See MODE below
  -c  --format=FORMAT   use the specified FORMAT instead of the default;
                          output a newline after each use of FORMAT
      --printf=FORMAT   like --format, but interpret backslash escapes,
                          and do not output a mandatory trailing newline;
                          if you want a newline, include \n in FORMAT
  -t, --terse           print the information in terse form
      --help		显示此帮助信息并退出
      --version		显示版本信息并退出

The --cached MODE argument can be; always, never, or default.
`always` will use cached attributes if available, while
`never` will try to synchronize with the latest attributes, and
`default` will leave it up to the underlying file system.

The valid format sequences for files (without --file-system):

  %a   permission bits in octal (note '#' and '0' printf flags)
  %A   permission bits and file type in human readable form
  %b   number of blocks allocated (see %B)
  %B   the size in bytes of each block reported by %b
  %C   SELinux security context string
  %d   device number in decimal
  %D   device number in hex
  %f   raw mode in hex
  %F   file type
  %g   group ID of owner
  %G   group name of owner
  %h   number of hard links
  %i   inode number
  %m   mount point
  %n   file name
  %N   quoted file name with dereference if symbolic link
  %o   optimal I/O transfer size hint
  %s   total 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   user ID of owner
  %U   user name of owner
  %w   time of file birth, human-readable; - if unknown
  %W   time of file birth, seconds since Epoch; 0 if unknown
  %x   time of last access, human-readable
  %X   time of last access, seconds since Epoch
  %y   time of last data modification, human-readable
  %Y   time of last data modification, seconds since Epoch
  %z   time of last status change, human-readable
  %Z   time of last status change, seconds since Epoch

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
  %i   file system ID in hex
  %l   maximum length of filenames
  %n   file name
  %s   block size (for faster transfers)
  %S   fundamental block size (for block counts)
  %t   file system type in hex
  %T   file system type in human readable form

--terse 和下列<格式>等效：:
    %n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %W %o %C
--terse --file-system 与下列<格式>等效：
    %n %i %l %t %s %S %b %f %a %c %d

注意：您的shell 可能内置了自己的stat 程序版本，它会覆盖这里所提及的相应
版本。请查阅您的shell 文档获知它所支持的选项。

用法：stat [选项]... 文件...
显示文件或文件系统的状态。

[root@RockyLinux-server001 ~]# ls -l aa01.txt
-rw-r--r--. 1 root root 0 12月 10 16:14 aa01.txt

[root@RockyLinux-server001 ~]# stat aa01.txt
  文件：aa01.txt
  大小：0         	块：0          IO 块：4096   普通空文件
设备：fd00h/64768d	Inode：201326725   硬链接：1
权限：(0644/-rw-r--r--)  Uid：(    0/    root)   Gid：(    0/    root)
环境：unconfined_u:object_r:admin_home_t:s0
最近访问：2024-12-10 16:14:42.188422475 +0800
最近更改：2024-12-10 16:14:42.188422475 +0800
最近改动：2024-12-10 16:14:42.188422475 +0800
创建时间：2024-12-10 16:14:42.188422475 +0800

[root@RockyLinux-server001 ~]# stat -f aa01.txt
  文件："aa01.txt"
    ID：fd0000000000 文件名长度：255     类型：xfs
块大小：4096       基本块大小：4096
    块：总计：18333696   空闲：17516044   可用：17516044
Inodes: 总计：36700160   空闲：36642165

[root@RockyLinux-server001 ~]# stat --format=%y aa01.txt
2024-12-10 16:14:42.188422475 +0800

[root@RockyLinux-server001 ~]# stat --format="Modify time: %y" aa01.txt
Modify time: 2024-12-10 16:14:42.188422475 +0800

[root@RockyLinux-server001 ~]# stat -t aa01.txt
aa01.txt 0 0 81a4 0 0 fd00 201326725 1 0 0 1733818482 1733818482 1733818482 1733818482 4096 unconfined_u:object_r:admin_home_t:s0