将/etc/fstab复制到/var/tmp下,设定权限如下:属主为root,组为root,不可被任何人执行,andrew可读可写,susan只能读,其他人只能读.（andrew和susan属于sysuser组）我想只有把andrew和susan再加入root组,要不然无

Question

将/etc/fstab复制到/var/tmp下,设定权限如下:
属主为root,组为root,不可被任何人执行,andrew可读可写,susan只能读,其他人只能读.（andrew和susan属于sysuser组）
我想只有把andrew和susan再加入root组,要不然无答案.

Answer 1

使用setfacl
useradd andrew
useradd sysuser
cp /etc/fstab /var/tmp/fstab
ls -l /var/tmp/fstab
-rw-r--r-- 1 root root 715 03-31 16:47 /var/tmp/fstab
setfacl -m u:andrew:rwx /var/tmp/fstab
getfacl /var/tmp/fstab
getfacl: Removing leading '/' from absolute path names
# file: var/tmp/fstab
# owner: root
# group: root
user::rw-
user:andrew:rwx
group::r--
mask::rwx
other::r--
cs113:root@/home>su - andrew
cs113:andrew@/home/andrew>echo 'a'>>/var/tmp/fstab