Git tries to help translate line endings between operating systems with different standards. This gets sooo frustrating. Here’s what I always want: On Windows: git config –global core.autocrlf inputThis says, “If I commit a file with the wrong line endings, fix it before other people notice.” Otherwise, leave it alone. On Linux, Mac, etc: git …
I’ve been frustrated every time I try to grasp CSS for years. “I just want this on the left and this to be over here!” etc. Now I realize that CSS doesn’t work that way for very good reasons. In most programming, we give instructions for what we want to happen. But in CSS, it’s …
My objective is to run some services on Pivotal Web Services (PWS; hosted instance of Pivotal Cloud Foundry), and have them respond to requests to `https://survey.atomist.com` at various paths. Currently these services run on AWS, along with services that respond at other subdomains of atomist.com. TL;DR: this is easy enough for HTTP requests and prohibitively …
Read moreMigrating some services from AWS to Pivotal Web Services
To quickly move to the root of the current git repository, I set up this alias: git config –global alias.home ‘rev-parse –show-toplevel’ Now, git home prints the full path to the root directory of the current project. To go there, type (Mac/Linux only) cd `git home` Notice the backticks. They’re not single quotes. This executes the command and then uses …
Ah, command line tools, they’re so fast. And so easy to use on a Mac. Given a bunch of image files in the same dimensions, that you want to crop to a fixed portion of the image: 1) Install imagemagick brew install imagemagick 2) put all the images in a directory by themselves, and cd …
Read moreCropping a bunch of pictures to the same dimensions
It’s time to clean out some old branches from the team’s git repository. In memory of them, I record useful tricks here. First, Sharon’s post talks about finding branches that are ripe for deletion, by detecting branches already merged. This post covers those, plus how to find out more about the others. This post is …
How much data can our Hadoop instance hold, and how can I make it hold more? Architectural Background Hadoop is a lot of things, and one of those is a distributed, abstracted file system. It’s called HDFS (for “hadoop distributed file system,” maybe), and it has its uses. HDFS isn’t a file system in the …
Or, What underlying implementation is clojure.tools.logging using? Today I want to change the logging configuration of a Clojure program. Where is that configuration located? Changing the obvious resources/log4j.properties doesn’t seem to change the program’s behavior. The program uses clojure.tools.logging, but that’s a wrapper around four different underlying implementations. Each of those implementations has its own ideas …
In bash (the default shell on Mac), today we wanted to execute a command over each line of some output, separately. We wanted to grep (aka search) for some text in a file, then count the characters in each matching line. For future reference… Perform a command repeatedly, once per line of input: grep “the” …
Read moreRepeating commands in bash: per line, per word, and xargs
This should be easier, but here it is for reference: curl -w “status: %{http_code}\n”