toolbox

sdptool add --channel 20 SP

https://github.com/dgorissen/coursera-dl

install:

sudo pip install coursera-dl

usage: (example for startup engineering)

This bit of code leverages on a well-known and highly available server to determine if there is internet connectivity (requires error handling, but you get the gist), and what the local ip address for the internet enabled network interface is. Does not work is there is a proxy.

Java CLI tool to get/set/delete port mappings from a compatible uPNP router

http://upnp-portmapper.sourceforge.net/

Example usage to add port 4444 to local ip

Quick and easy overview of how to configure mutt to work with a gmail account. Shouldn't be too different with any other SMTP server ...

This has the added benefit that doesn't use interactive mode, and as such can be used programmatically quite easily.

Pretty useful stuff:

HandBrakeCLI -i alarm.avi -o alarm.m4v -e x264 -q 30 -r 15

This is pretty handy, specially if you want to have something like a -v option for your application's launcher. There are 2 steps involved in doing this, the first:

Where we do a svn propset to enable the $Revision$ macro

And then in our source code, something like:

Yesterday I had to find a way to generate 128A type barcodes for printing. Fortunately, ubuntu already has in its repositories a command line application to solve this problem, aptly named "barcode".

Man page for barcode

example usage:

This code snippet implements basic interfacing with the unix cdrecord application. It only receives a file or folder path and writes a single-session cd. I only implemented basic failure detection by testing the return value of the subprocess, more complex error detection can be acomplished by searching for patterns in the cdrecord output log.

Also, I did not implement any facilities for measuring the burn process progress, but this can be done by using re.compile patterns and searching the cdrecord output for the appropriate string.

For a good source code reference (albeit outdated by now) check the eroaster project:

One of the problems I had recently was that I needed to create a hash for an arbitrary number of files contained in a folder. After googling for 5 seconds I found a pretty good reference here:

http://stackoverflow.com/questions/1131220/get-md5-hash-of-a-files-without-open-it-in-python