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## Question: 假设现有两个用户:姓名_1,姓名_2(以下我们用 用户1 和 用户2 描述),用户1 属于 部门1,用户2 属于 部门2,他们分别只能访问自己所属部门的目录,但可访问 public 目录。 ## Answer: linux 权限:ACL > SUID/SGID/SBIT > 属主/属组/其他人 ### 使用 ACL 进行控制: root 用户创建文件夹,去除 other 权限,设置 ACL ``` groupadd department1 groupadd department2 useradd -g department1 name_1 useradd -g department2 name_2 mkdir /departs mkdir /departs/department1 mkdir /departs/department2 mkdir /departs/public cd /departs chmod -R 750 ./* setfacl -m g:department1:r-x department1 setfacl -m d:g:department1:r-x department1 setfacl -m g:department2:r-x department2 setfacl -m d:g:department2:r-x department2 setfacl -m g:department1:r-x public setfacl -m d:g:department1:r-x public setfacl -m g:department2:r-x public setfacl -m d:g:department2:r-x public ``` ### 使用 属主/属组/其他人 权限进行控制: root 创建目录,去除 other 权限,修改目录属组,使同组用户能进行访问 ``` groupadd department1 groupadd department2 groupadd public useradd -g department1 -G public name_1 useradd -g department2 -G public name_2 mkdir /departs mkdir /departs/department1 mkdir /departs/department2 mkdir /departs/public cd /departs chmod -R 750 ./* chgrp department1 department1 chgrp department2 department2 chgrp public public ```