oom in dmesg but not system logs

[LukeShirnia]

Dmesg reporting OOM issues but script reporting nothing

This is because dmesg is reporting very old oom incidents.
System has rotated and purged all logs since that report so there is nothing left in the log file.

Grab the oldest date (1st line in oldest compressed file) and print message to explain that its an old message, there are no incidents since $date

[LukeShirnia]

Complete