I just installed RabbitMQ in Arch Linux from the AUR and can start it without problems using systemctl. sudo systemctl start rabbitmq (BTW: I don’t have strong feelings against systemd, to the contrary, it feels very right and sysv/initscripts had…
Learning SPARQL can be a challenging task, not only because real-life queries tend to become rather convoluted but also because running SPARQL queries on arbitrary RDF data requires setting up and tearing down a (temporary) RDF store and a SPARQL…
Examples:
curl -vX HEAD http://mydomain.com/possibly_very_large_file.zip Used as a shell function function curl-size { curl -vX HEAD $1 2>&1| grep ‘< Content-Length:' | grep -o '[0-9]+' } which can be used like this: $ curl-size http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.4.31.tar.bz2 无 80181587
I’m pretty sure I picked this up somewhere at some point. Props to the original author. I have this as perlmodvar in my $PATH – named like that for whatever reason, perl-module-version would be more accurate but I’m used to…
I seldom see the desktop because I tend to maximize my windows or use them full screen but when I do, I enjoy a nice galaxy, a glorious moon or anything else that has been featured as a Astronomy Picture…
chromatic lists quite a lot of questions every Good Perl Programmer should be able to answer. I suppose I can answer at least half of them, but some, especially the documentation-related ones, are somewhat embarrassing. I have to admit, I’m…
If you have a directory with lots of files and can’t decide just which of those files you want to use, this script might come in handy. It selects one file randomly from within the directories given with the –dirs/-d…
Simon Tatham wrote an excellent set of puzzle games. There’s actually quite a lot of them and the executables are all named without prefix, so it’s hard to remember them all. I think Debian/Ubuntu add .desktop-entries for the application menu.…
Sometimes, one needs to extract files from a binary stream, e.g. from a broken tar-archive or some other compound file format for which there is no native software to export the images. The general way of handling such tasks: Check…
tech notes 