Linux 系统中，文件的权限表示为“-rw-rw-rw-”，下列说法正确的是（ ）。
- A.文件所有者拥有读、写和执行权限
- B.文件所在组用户拥有读、写和执行权限
- C.其他组用户拥有读和写权限
- D.其他组用户拥有读和执行权限
正确答案及解析
正确答案
解析
Linux中，权限的格式：-rw-rw-rw-
（1）第0位确定文件类型(说明: -:普通文件, d:目录，l : 连接文件, c: 字符设备文件[键盘,鼠标] b: 块设备文件[硬盘] ) 。
（2）第1-3位确定所有者（该文件的所有者）拥有该文件的权限。 R: 读 ， w : 写权限 x: 执行权限 (-表示没有)。
（3）第4-6位确定所属组（同用户组的）拥有该文件的权限 。
（4）第7-9位确定其他用户拥有该文件的权限 。
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