Ever want to checkout a new git branch from another branch without setting up tracking? Here is the longhand way: git checkout old-branch git branch new-branch git checkout new-branch But there is a quicker way: git checkout -b new-branch old-branch … which does the same thing, albiet in one command.
Archive for the ‘Open Source’ Category
git checkout -b –no-track
Posted in Open Source, Software, Technique, tagged DVCS, git, git checkout, software configuration management, version control on July 2, 2011 | Leave a Comment »
Optimal PuTTY Settings for SSH Connections to Linux
Posted in Engineering, Linux, Open Source, Technique, tagged PuTTY, PuTTY Configuration, PuTTY Settings, Software Technique, SSH, SSH Agent, SSH Agent Forwarding, SSH Client, Windows SSH on June 7, 2011 | 2 Comments »
PuTTY is a great program. I think it tops the cake for most-useful-utility-on-windows that I have ever encountered. I’ve used it to connect to telnet, ssh, linux, unix, windows, hypervisors, and even IBM iSeries (AS-400). However, despite all the cool things one can do with PuTTY, the default out-of-the-box-settings leave a good bit to learn. For [...]
Home School Software in Production Use!
Posted in Engineering, Interesting, Life, Open Source, Projects, Software, tagged Geometry, Home School, Home School Software, Homeschool, Photography, Software on March 6, 2011 | 2 Comments »
Just an update on the use of our Home School software package… So far, we have entered 216 activities with 462 images/scans across 13 projects, 12 subjects, and 4 students. Nearly all of the photographs we take are with the Motorola Droid X. Provided you have sufficient light, the quality is very acceptable. Here is [...]
Arduino, Transistors, Motors, and LEDs
Posted in Engineering, Fun, Interesting, Open Source, Projects, Science, tagged Arduino, Bread Board, Diode, Electronics, Motor, Resistor, Transistor, Voltage on March 5, 2011 | Leave a Comment »
Well, the fun is increasing with Arduino. We hooked up some circuitry which enables a transistor to switch a fairly large 12V load via a very small 5V digital pin on the Arduino board. This has been a great learning resource: http://www.kpsec.freeuk.com/trancirc.htm Basically, we have 12V power going through a motor circuit (protected by a signal [...]
Fun with Arduino
Posted in Engineering, Interesting, Open Source, Software, Technique, tagged Arduino, Electronics, Projects, Robotics on February 20, 2011 | Leave a Comment »
Ok, so if you haven’t heard about it, Arduino is a really cool piece of “open source hardware”. In simple terms, it is a single board computer with a number of analog and digital inputs and outputs, that can be programmed from your computer, but run independently. Arduino is an open-source electronics prototyping platform based on [...]
Home School Software now supports Images!
Posted in Engineering, Fun, Interesting, Open Source, Perspective, Projects, Software, Technique, tagged Home Education, Home School, Home School Software, Log, Portfolio, Students, Web Applications on January 3, 2011 | Leave a Comment »
Today I got to a great milestone with the homeschool software I discussed here. It now has excellent image support. For every activity, you can attach an unlimited number of images. They are stored in the database with all of the other data, so it’s easy to backup. Also, I am using ImageMagick to resize [...]
360 Panoramic from the Top of the Hill
Posted in Fun, Interesting, Nature, Open Source, Photography, Projects, Technique, tagged Hugin, Kettle Road, Land, Panoramic, Photography, Simondale Excavating, Woods on January 2, 2011 | Leave a Comment »
I took about 45 photos today, freehand, with Eli’s FinePix point-and-shoot digital camera. The camera isn’t in top shape, and the light of the sun really washed out some of the shots, which was propagated to all shots by Hugin while stitching. I would imagine that if I knew more about Hugin, that I could [...]
Panoramic Image of Woods and 3 Driveways
Posted in Fun, Interesting, Nature, Open Source, Photography, tagged Driveways, Droid X, Gravel, Hugin, Kids, Outdoors, Panorama, Photography, Woods on December 31, 2010 | Leave a Comment »
Using the Motorola Droid X, I took about 10 photographs at 5MP, freehand. Then I used Hugin, the open source image stitching software. I had never stitched images together, but I must say this tool is impressive. The images were all various shades, angles, and since taken freehand, not straight. However, see the result below…
How to force-drop a postgresql database by killing off connection processes
Posted in Engineering, Linux, Open Source, Software, System Administration, Technique, tagged Drop Database, Kill Process, PostgreSQL, Process on November 3, 2010 | 4 Comments »
Ever need to drop a postgresql database, but it would not let you because there are open connections to it (from a webapp or whatever)? Quite annoying. If on a production server, and other databases are being used, restarting postgresql is a last resort, because it generates downtime for your site (even if small). I [...]
flot: an open source non-flash charting library!
Posted in Engineering, Open Source, Software, Technique, tagged Flash, FLOT, Graphing, Open Source, Web Development on October 20, 2010 | Leave a Comment »
And it’s for jQuery none-the less! http://code.google.com/p/flot/
