-
The Modern Arp table: ip -s neighbor show
While trying to see if my kindle was in the house or not, I got to looking at the arp table, and specifically: Which prints out the table along with some info about the entry being stale or reachable and a few numbers. The man page says nothing, but luckily stackexchange came to the rescue:…
-
DMARC, DKIM and EXIM
This guide was a great help in configuring my mail server to use DMARC and DKIM – https://www.systemajik.com/implementing-dkim-with-exim/ I run EXIM and have done for years, but recently gmail stopped accepting mail as I didn’t have SPF and DMARC in place. So, to get with the times, I do so. Saving here for future reference.
-
Peter on Peter
Fascinating interview with Laurence Peter of Peter’s Principle fame.
-
Tip: Removing stale docker volumes
Clean up any stale, unused docker volumes that are hogging disk space: Via https://lebkowski.name/docker-volumes/