In this tutorial, I will explain how to create a local Subversion (SVN) repository intended for a single user. I assume that you already know the benefits of keeping track of old revisions of projects or important documents such as a resume or a thesis you have been writing. Subversion offers you a very convenient yet powerful method to do so, and the easiest way to do so with Subversion (SVN) is to create a local home repository intended for a single user – you.
Continue reading Creating a Local SVN Repository (Home Repository)
Month: October 2007
spass – A Secure Password Generator Utility
spass is a secure password generation tool. spass was designed under the assumption that a password generator is only as good as its random number generator, so spass uses the Random class, a /dev/random-based cryptographically strong random number generator class. As always, I tried to make the command-line interface as user-friendly as possible (as much as a command-line interface can be friendly).
Continue reading spass – A Secure Password Generator Utility
Conditional Expressions in Python 2.4
Python 2.5 introduced a new syntax structure: conditional expressions. For programmers in languages such as C, these structures seem very basic and fundamental, but Python lacked them for many years. As I said, Python 2.5 introduced such a syntax structure; one may use it in the following form:
x = a if condition else b
As you probably guessed, a is assigned to x if condition evaluates to true, and b is assigned otherwise. This is pretty much equivalent to the C conditional expression. But as I said, this structure was only introduced in 2.5. Previous versions of Python are still widely deployed and in use, so how do you achieve the same thing in older versions of Python?
Continue reading Conditional Expressions in Python 2.4
ssh-keygen Tutorial – Generating RSA and DSA Keys
In this post I will walk you through generating RSA and DSA keys using ssh-keygen. Public key authentication for SSH sessions is far superior to password authentication and provides much higher security. ssh-keygen is the basic way to generate keys for this kind of authentication. I will also explain how to maintain those keys by changing their associated comments and, more importantly, by changing the passphrases using this handy utility.
Continue reading ssh-keygen Tutorial – Generating RSA and DSA Keys
radio.py-0.4 – Listening to Radio the Easy Way
Update: radio.py 0.5 is available.
radio.py is a little script that makes it very easy to listen to radio under Linux (and maybe other OSs too) with mplayer. All you need to do is call radio.py with the name of the station you want to listen to. For example:
radio.py Radio Paradise
or
radio.py BBC3
To read more about radio.py, go to the first post discussing radio.py.
What’s New
Here are some of the things that have changed in radio.py-0.4 compared to the previous release (0.3). Continue reading radio.py-0.4 – Listening to Radio the Easy Way