iamplane 2011-08-16
Linux 下 通过 stat 命令获取文件的属性,例如大小,最后的修改时间等等.
stat的属性使用方法 可以通过
"stat --help" 获取如下内容:
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
使用方式如下:
File: `myfile.ext' Size: 1044611 Blocks: 2056 IO Block: 32768 regular file Device: xxx/xxx Inode: 1543149 Links: 1 Access: (0664/-rw-rw-r--) Uid: (3005410/ xxxxx) Gid: (10001013/xxxxxx) Access: 2011-08-16 03:01:05.393004000 -0400 Modify: 2011-08-16 04:09:30.714166000 -0400 Change: 2011-08-16 04:09:30.714166000 -0400
1313486175|1118056
以上使用了'format'参数,此处使用了
%Z Time of last change as seconds since Epoch
与
%s Total size, in bytes
注意,如果使用多个格式标签,需要使用引号将其包裹起来,此处的 | 是自行添加的,可以自行添加\t \n等等格式字符.