OVALFileLinker from SCAP Security Guide ssg: [0, 1, 80], python: 3.10.12 5.11.2 2026-01-21T21:18:20 Ensure real-time clock is set to UTC Ubuntu 22.04 Ensure RTC is using UTC as its time base /etc/localtime /etc/localtime ^(/usr)?/share/zoneinfo(/Etc)?/(GMT|UTC)$