Unable to Update Ghost As Ghost-Mgr - 'EACCES: permission denied, open '/var/www/ghost/.ghost-cli''

Evening All.

I’m new to Ghost, but have [somehow] managed to get a blog up-and-running - https://www.daysoutinthemidlands.co.uk

However, as part of my first routine Ghost “maintenance checks”, I am trying to update Ghost, using a Windows Command Prompt window.

I have tried to run the $ ghost update command, as the root, ghost-mgr (I set up Ghost using a Digital Ocean applet), and another user I created, as advised to do so during Digital Ocean’s installation guide.

Unfortunately, all three accounts keep resulting in the following error:

'EACCES: permission denied, open '/var/www/ghost/.ghost-cli''

As such, I tried following as per this Ghost help article - https://ghost.org/docs/faq/root-user-fix/

The moment I get to the point where I provide the command…

mv /root/.ghost/config /home/<user>/.ghost/config

[Where I replace user with the third user referenced further above - the one that isn’t root or ghost-mgr]

…I receive the following error:

mv: cannot stat '/root/.ghost/config': Permission denied

As such, as I’m at a complete loss now as to how to provide this third user with write access to the root website directory i.e. /var/www/ghost

Many other articles seem to suggest that the ghost-mgr user should be able to run the Ghost update, but in my case, I still receive the ‘Permission Denied’ error highlighted further above.

Any help would be greatly appreciated. I am a complete beginner when it comes to using command line prompts, so where possible, when looking to reply, please bear this in mind, as I may need a little more support than most.

Thanks, everyone.