Lawrence Lessig could be called a cultural environmentalist. One of America’s most original and influential public intellectuals, his focus is the social dimension of creativity: how creative work builds on the past and how society encourages or inhibits that building with laws and technologies. In his two previous books, CODE and THE FUTURE OF IDEAS, Lessig concentrated on the destruction of much of the original promise of the Internet. Now, in FREE CULTURE, he widens his focus to consider the diminishment of the larger public domain of ideas. In this powerful wake-up call he shows how short-sighted interests blind to the long-term damage they’re inflicting are poisoning the ecosystem that fosters innovation.

This manual is a printed edition of the official Perl reference documentation from the Perl 5.12.1 distribution. It describes the syntax of Perl and its built-in datatypes, operators, functions, variables, regular expressions and diagnostic messages.

This manual is the official reference for the Python language itself. It describes the syntax of Python and its built-in datatypes in depth. This edition has been revised for the 2.5 release of Python.

by David MacKenzie, Paul Eggert, and Richard Stallman

This manual describes how to compare and merge files using GNU diff and patch.

It includes an extensive tutorial that guides the reader through all the options of the diff and patch commands. Later chapters cover powerful time-saving techniques such as automatic merging of divergent branches of a source tree.