https://quickbox.io/knowledgebase/plex-cannot-read-write-my-media-directory/
Could this topic get fixed?
Content is kinda missing I assume 
Link fixed
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See:
Hi everybody ! First of all, i apologize if my english is approximate, it’s not my first language .
i tried the following command to change plex rigths :
username=USERNAMEHERE!!!
usermod -a -G ${username} plex
chown ${username}:plex /home/${username}
chmod 755 /home/${username}
setfacl -m g:${username}:rwx /home/${username}
but it doesn’t work, i have this message “usage: usermod [otpion] LOGIN”
I’m new with command prompt, and i don’t know what to do . . .
If someone wants to help, it would be wondeful !!
Hey there @achnael! Just to confirm, you did replace the USERNAMEHERE!!! with your own username correct?
Hey !! thx for the answer, but yeah i did replace USERNAMEHERE!!! with my own username ^^