Can’t reuse Dell computer parts
I have a very nicely built 12 year old Dell tower, that I inherited from some startup, which I use as a home server running Ubuntu. I also have a […]
Guido said it would cause too much disturbance…
Python has two ways to convert an object to a string: str(x) and repr(x). str is supposed to be user-readable, and repr is more technical, e.g. for debugging purposes. To […]
Type cast in Python
TL;DR: Python type cast looks like an assertion: # Python x = expression_returning_Base assert isinstance(x, Derived) This corresponds to Java or C# // Java Derived x = (Derived)expression_returning_Base; In languages […]
Bash: is missing file older than existing file?
In bash it is possible to test whether one file is older or newer than the other: if [ file1 -nt file2 ]; then # do something fi if [ […]
Docker: why one process per container does not always work
My “permanent” SSL certificates are expiring soon, so I decided to switch to letsecnrypt. The easiest way to obtain their certificate is allegedly to use Certbot. There is a nice […]
“Register” is a new “buy”?
I needed an IRC client for Windows, and mIRC came up in searches as #1 recommended. It said something about “registration” during the installation, but I ignored assuming that registration […]
File permissions on Docker volumes
When a host directory is mounted into a docker container, how are file permissions handled? Docker copies files permissions from the host to the container verbatim, inluding numeric user ids. […]
A funny story about Mac hardware
I have a MacBook Pro now, courtesy of my new employer, but it only has four USB-C ports and nothing else, so none of my existing hardware could connect to […]
MacOs friendly circle of doom
I am using a MacBook for work now. Got a stuck installer, trying to restart the computer. Messages (not exact quotes). The system: cannot restart, please exit installer [Cancel], [Try […]
Update: Livejournal cross-post requires PHP XML
Found first hiccup: LiveJournal cross-post plugin did not work on the new site. The error was somewhat misleading: something like ‘message from www.livejournal.com: malformed, unable to parse’. In fact it […]