Docker allows you to develop, ship and run any application, anywhere. The metaphor is that of the standard shipping container that fits on any ship, can be handled by any crane, and loaded onto any train or truck. In a…
Vagrant is cool: Vagrant provides easy to configure, reproducible, and portable work environments built on top of industry-standard technology and controlled by a single consistent workflow to help maximize the productivity and flexibility of you and your team. Furthermore: Vagrant…
Start PHP webserver (in current directory): php -S localhost:8080 # starts http server on port 8080 Start PHP prompt (with illustrating example):
Installing Postgres+PostGIS has never been easier on Mac. In fact, it is now an app! You download the app-file from postgresapp.com, place it in your Applications folder, and you’re done. Really. If you think that was over too fast If…
The command wget is useful, but unfortunately doesn’t come preinstalled with Mac. Yeah, you can install it of course, but if you’re doing it from source, the process has a few steps to satisfy all the dependencies; start by configure…
In bash, you simply prefix a command with one or more XXX=”YYY” pairs, e.g. $ A=”B” X=”Y” python print_env.py … A=B X=Y The code for print_env.py: import os for ev in os.environ: print “{0}={1}”.format(ev, os.environ[ev])
Math in Genealogy is a great project (donate online). Sven Köhler from Potsdam, Germany has written a python script for visualizing the database, which I’m going to try. First step is to clone the git repo: $ git clone git@github.com:tzwenn…
Warning: This is not a very interesting post. I’m toying around with the Redis benchmarking tool. What would be significantly more interesting would be to toy around with the Lua API in Redis, which I’ll do in a subsequent post.…
The profiling tool in GNU is called gprof. Here is a short, boring example of how to use it. 1) Write hello world in C (hello.c) #include int foo() { int b = 54324; int j; for (j=0; j <…
Simple. This works.