Cannot use su in terminal
After gaining root and installing LineageOS 13.0.20170715-NIGHTLY-manta plus the addonsu-13.0-arm-signed.zip to enable root once booted into the OS.
I have installed SuperSU version 2.82 but could only see RootChecker in the apps tab. So I tried uninstalling this and installing version 2.79 which then prompts me to upgrade the SU binary. I can still only see RootChecker in the apps tab.
I would like to be able to become super user in the terminal, just so that I can edit my hosts file but I get "su not found".
What am I doing wrong?