Add permissions to OSMC user on LAN

Can You tell me how to do it wright because I’m afraid I will broke my nextcloud?

login as root user

chmod dietpi:dietpi /mnt/Toshiba/
chmod dietpi:dietpi /mnt/Toshiba/dietpi_userdata/

I make sudo su from ssh when dietpi user and give command:

root@DietPi:/# chmod dietpi:dietpi /mnt/Toshiba/
chmod: błędne uprawnienia „dietpi:dietpi”
Napisz „chmod --help” dla uzyskania informacji.

It means wrong permissions.

sorry my fold. should be chown instead of chmod

chown dietpi:dietpi /mnt/Toshiba/
chown dietpi:dietpi /mnt/Toshiba/dietpi_userdata/

It’s progress because I can make folder and delete folder downloads in dietpi_userdata but when I enter folder downloads or movies I cannot delete anything. Can You show me command to affect all subfolders from dietpi_userdata?

well I would not do all folder at once. because folder nextcloud_data need to stay with user www-data. Same for folder mysql. (btw mysql should be owned by mysql user and group)

pls go inside dietpi_userdata and do the following

chown -R dietpi:dietpi <DIR>

pls replace with every folder you need to access

I try that but don’t work. Do I have to reboot Dietpi system?

chown -R dietpi:dietpi /mnt/Toshiba/dietpi_userdata/downloads/

Edit. OK I can delete files now in Android with Raspicontrol App so I think it should work now. Thank You for Your time and help.

what is not working?

It’s OK now. I have access from smartphone, laptop and OSMC. Thanks for help.