用户user1和user2同属于users组，user1有一个文件file1，需要user2能修改user2的file1文件，改文件需要拥有什么样的权限A、646B、746C、744D、664
用户user1和user2同属于users组，user1有一个文件file1，需要user2能修改user2的file1文件，改文件需要拥有什么样的权限
- A、646
- B、746
- C、744
- D、664
相关考题：
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user1和user2,同属于users组。在user1用户目录下有一文件file1,它拥有644的权限,如果user2用户想修改user1用户目录下的file1文件,文件拥有权限应为:() A.744B.664C.646D.746
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系统中有用户user1和user2，同属于users组。在user1用户目录下有一文件file1，它拥有644的权限，如果user2用户想修改user1用户目录下的file1文件，应拥有()权限。A.744B.664C.646D.746
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单选题系统中有用户user1和user2，同属于users组.在user1用户目录下有一文件file1，其本身权限为644，如果要允许user2用户修改user1用户目录下的file1文件，则应该改file1的权限，为什么？（）A744B664C646D746
单选题当需要在系统中添加sales组，并在该组中添加uesr1user2uesr3三个用户时，我们需要添加下面的哪一行来实现（）。A在/etc/group文件中，添加sales：44：user1，user2，user3B使用命令groupaddsalesC使用命令groupadd-asalesuser1user2user3D在/etc/group文件中，添加sales：：44：user1，user2，user3
单选题系统中有用户user1和user2，同属于users组。在user1用户目录下有一文件file1，它拥有644的权限，如果user2用户想修改user1用户目录下的file1文件，应拥有（）权限。A744B664C646D746
问答题请按下列要求写出每一步骤的命令：增加二个用户账号user1（UID为501，并属于组group1）、user2（UID为502，并属于组group2）。