How to verify from OS level in Linux based systems if secure boot is enabled

Well there is a neat tool called

bootctl

If you open the terminal with for example CTRL+alt+t or alt+f2 “xterm”

And install it on debian based systems with this

If you are on a UEFI system with systemd it always preinstalled… sorry, my fault. I always try to expand my knowledge :3

And then type

bootctl status or as sudo, it will show it to you, ;) you're welcome

Cheers