SE-Linux: check and deactivate

I quite often run into security problems when testing stuff on my machine.
This is to remind me how to deactivate SE-Linux, so I can see if it is causing the problem...

sudo getenforce
> Enforcing

If "sudo getenforce" returns "Enforcing", you have SE-Linux, so turn it off.

sudo setenforce 0

then

sudo getenforce
> Permissive

... now test the thing...