When configured as a router, for instance for hosting virtual machines with KVM, a Debian machine with a somewhat recent kernel will not listen to router advertisements from others. This makes sense in many cases, but when you have a VM host in your internal network, which only router function is to allow communication to […]
Exim4 introducted new behaviour in the versions included in Debian Stretch. Suddenly, the RFC max line length of 998 characters is enforced, and emails with lines exceeding this length are returned to sender. For the interested, part of the discussion about this feature is over here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839147 Anyway, the solution to this issue in Debian […]
Before reading this, please note that much of the information in mcelog is hardware dependent. Your mileage may vary. Memory gone bad So one of the servers, running an X99-WS/IPMI board from Asus, began putting errors into /var/log/mcelog. Thankfully, they were all the same, telling me the following: mcelog: failed to prefill DIMM database from […]
Someone recently asked, in #bash on Freenode, how to find duplicate files with Bash. Several options were suggested, and the user ended up installing and running “fdupes“. However, this sort of thing should be reasonably easy to do using “find” and a few pipes. As a quick overview, what you want to achieve is to […]