STRETCH,mate: Why neither: /etc/profile nor /etc/environment is parsed for gui login?
 

Hi all
I realized that when I log into graphical session none of aforementioned files are processed.
On the other side, both of them are processed when I log into text terminal.
Why is it so? How to set system-wide environment for any kind of session?
regards

They aren't needed until a terminal environment is invoked. My understanding it that they should get parsed when you open a terminal emulator in your GUI environment (if I'm wrong, I'm sure someone will correct me.)

Nope.
None of env variables defined in these files appear in gui termial :(

Perhaps the GUI terminal is not run as a "login shell"? I have no idea how MATE handles this, but under XFCE, it's an option under the "Preferences" menu item.

Bingo! There is a termial option: "Run command as login shell". When set, the /etc/environment file is parsed.
Thanks a lot!