Slideshow of Blackboard Images

Click here to see a page of smaller, easier to print images of the blackboard images.

Source Code to tail

Here is complete source for two versions of the unix tail program. The manual explains what tail does.

The bsd version is part of the version of unix written at the University of California at Berkeley, one of the major sites of Unix growth.

The gnu version is part of the version of unix written by the Free Software Foundation , a project started in the mid 80's by Richard Stallman.

Both programs allow a user to display the last part of a file, various options are provided.

They use different techniques, and quite different coding styles.