Each access level (read, write, execute) has an octal value:
| Access level | Octal value |
|---|---|
| Read | 4 |
| Write | 2 |
| Execute | 1 |
Each identity (user, group, others) has a position:
| Identity | Position |
|---|---|
| User | First or left-most |
| Group | Middle |
Others -Last or right-most
chmod 740 [file]were user has rwx, group has r only, and others have no access
The three permissions values are associated with identities: user, group, other
| u | g | o |
|---|---|---|
| 7 | 4 | 0 |
The 7 is assigned to the user and is the sum of 4+2+1 or read+write+execute (full access) The 4 is assigned to the group and is the sum of 4+0+0 (read-only) The 0 is assigned to others and is the sum of 0+0+0 (no access)
The 7 is assigned to the user and is the sum of 4+2+1 or read+write+execute (full access)
The 4 is assigned to the group and is the sum of 4+0+0 (read-only)
The 0 is assigned to others and is the sum of 0+0+0 (no access)set permissions for the Resources directory and all of its contents by using "-R"
$ sudo setfacl -R -m u:group:rx /to/folder
(mygroup)=(group)
$ sudo usermod -aG [GOUP] [MYUSER]
$ sudo chown [USER]:[GROUP] [file]
$ sudo chmod 750 [file]
$ sudo setfacl -m g:[group]:rwx [file] <-- worked for plex libraries, now showing up
$ sudo setfacl -m u:[user]:rwx [file]
sudo setfacl -m g:plex:rwx /media/andy