Technical notes, my online memory

Suppose you want to figure out which DNS server you're using and it is provided via DHCP. This can be surprisingly difficult. Suppose th...

I tried two linux tools, exiv2 and exiftool. exiftool seems to be better. exiv2 View full exif data with this (the default view only giv...

Amazon lets you create a "household" to share content, but it's really not obvious how you make kindle content from the other...

If you are using a Yubikey encryption scheme and want to add the key onto a new system there's a few hoops to jump through. These instr...

Google found, and worked with the dnsmasq author to fix , a bunch of vulnerabilities in dnsmasq. Now everyone needs to update tons of device...

In this post I described how I set up gpg keys on a yubikey. Since I have multiple yubikeys for some redundancy I occasionally have to use ...

gvm is a way to manage multiple go versions. It has some strange behaviour with go paths that I don't really understand. It essentially...