ESource-Prentice Hall's Engineering Source-provides a comprehensive, customizable introductory engineering and computing library. Featuring over 30 modules and growing, ESource allows professors to fully customize their textbooks through the ESource website. Professors are not only able to pick and choose complete modules, but also sections of modules, incorporate their own materials, and re-paginate and re-index the complete project. www.prenhall.com/esource ESource Access program gives students password access to the entire online ESource library.ESource Access Card: 0-13-090400-7. Include this ISBN when setting up an ESource Bundle. <br/> <br/> <br/>Computer Basics. <br/>Sample UNIX Session. <br/>File Editing. <br/>Communication and the Internet. <br/>Directories. <br/>File Management. <br/>UNIX Tools and Utilities. <br/>Advanced UNIX.