Ham radio, Programming, Networks, Electronics, FOSS, GNU/Linux, Trance and Ale.
Real programmers use vim?
Errors that are hard to find.
Setting a new hostname on a server.
How do I know it’s really you?
Blood alcohol level vs programming skill.
Not an XKCD hosted comic but worth a mention; don’t interrupt a programmer.
How does git work?
Not an XKCD hosted comic but worth a mention; building software right.