[6031769]

I have firefox installed on Linux. There is no /etc/firefox/policies/ dir, nor indeed even an /etc/firefox/ dir. Therefore, no need for sudo.

[corbindavenport]

The /etc directory and everything under it is protected.

[6031769]

Of course it is. But there's no point trying to put policies into a directory in a tree which doesn't exist and by extension which Firefox won't be reading.

In Linux (and in any sane system) there is no need for elevated privileges just to alter your browser settings.