Posted by ravas on
URL: https://forum.librecad.org/Correct-prodedure-for-avoiding-file-permission-problem-tp5714520p5714721.html

Open a terminal and input:
ls -l parent_dir_of_the_dir_you_are_trying_to_save_to

It will list the owner and group in the third and fourth columns.

You can also use: stat dir_you_are_trying_to_save_to

If it says root is the owner, then that is the problem.
You would need to log in with the su command,
and then change the owner with chown.
This is assuming the folder was mistakenly created as root.

http://www.linfo.org/chown.html