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In traditional POSIX, access permissions are granted to user/group/other in mode read/write/execute. The permissions can be checked with the -l  option of the command ls. For instance, if if user1 owns the folder test, the output would be the following: 

Code Block
languagebash
themeRDark
$ ls -lahd test/
drwxr-xr-x 2 <user1>user1 csstaff 4.0K Feb 23 13:46 test/

...

Code Block
languagebash
themeRDark
$ getfacl test
# file: test
# owner: <user1>user1
# group: csstaff
user::rwx
group::r-x
other::r-x

...

Code Block
languagebash
themeRDark
$ setfacl -m user:<user2>user2:rw test/

$ getfacl test/
# file: test
# owner: <user1>user1
# group: csstaff
user::rwx
user:<user2>user2:rw
group::r-x
mask::rwx
other::r-x

...

Code Block
languagebash
themeRDark
$ setfacl -x user:<user2>user2 test/

$ getfacl test/
# file: test
# owner: <user1>user1
# group: csstaff
user::rwx
group::r-x
mask::rwx
other::r-x

...

Code Block
languagebash
themeRDark
$ setfacl -dm user:<user2>user2:rw test/

$ getfacl test
# file: test
# owner: <user1>user1
# group: csstaff
user::rwx
group::r-x
mask::rwx
other::r-x
default:user::rwx
default:user:<user2>user2:rw
default:group::r-x
default:mask::rwx
default:other::r-x

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