解读Linux系统文件权限的设置方法

[test1@mail fs1]# ll
-rw-rw-r--+ 1 test1 test1 10 Feb 16 13:52 test1.txt

[test1@mail fs1]# getfacl test1.txt
# file: test1.txt
# owner: test1
# group: test1
user::rw-
user:test2:rw-
group::rw-
mask::rw-
other::r--

[test2@mail test2]# cd /fs1
[test2@mail fs1]# cat test1.txt
Create by test1

[test2@mail fs1]# echo "Modify by test2" >> test1.txt
[test2@mail fs1]# cat test1.txt
Create by test1
Modify by test2

[test3@mail test3]# cd /fs1
[test3@mail fs1]# cat test1.txt
cat : test1.txt Permission denied