SharkLinux is an Ubuntu-based distribution featuring the MATE desktop. The distribution automatically upgrades packages on the system to apply security patches. The distribution also enables sudo access by default without requiring a password for user convenience. SharkLinux features the Ubuntu Hardware Enablement (HWE) kernel by default.
There is no release schedule, and as far as I can tell are not version numbers on the newer builds, so the version listed is the build date.
