I write because there's a bit of a nerd in anyone of us.



Univention UCS would be a sweet “Domain-Controller in a box” solution if there weren’t that many pitfalls like setting the NTP server correctly. That stuff is...


Sort IPs

I was doing some research on spam again and had to do some stuff with a couple of IP Addresses. That’s where “sort” came in handy as a tool to do what its name suggests.


OpenSSL Cheat Sheet

Create a strong CSR and private key openssl req -new -nodes -newkey rsa:4096 -out server.crt -keyout server.key Parsing out the data within a certificate openssl asn1parse...

dead AIX power supply 0

/dev/null not found?

Today I came across a box with no /dev/null. Disturbingly that box even refused to boot. Here’s a quick fix in case: Boot with some liveCD...