Khan Academy: Rich repository of Educational Videos

Khan Academy accessible from http://www.khanacademy.org/ has huge number of free educational videos on a variety of subjects.

Though students are the ones who can benefit most here, this site can also be used by anyone interested in dusting the mind cabinet and doing a refresh!

Unix: more or less?

Commonly seen in Unix-based operating systems is usage of the command more to view paginated outputs. However, this command is quite old.

There exists the less command which has lot more functionality (like both forward and backward navigation) and is better performing as well (by not reading the entire file contents at the time of command invocation itself).

So, next time you want to use more, be frugal and use less instead – it is not useless though :)