Book excerpt: Unix is no longer someone else's OS. With Mac OS X built on top of it, Unix is becoming a household name, and more and more Mac users are ready to take it on. This book is for them! Based on a popular series of Unix tips, this book promises to deliver what most other Unix guides fail to: comprehensive tutorials and instruction on specific Unix subjects, commands, and projects, not just a handy reference guide. Arranged into 101 mini tutorials in 11 key technology areas, this book provides all the tricks, techniques, and training that you need to understand how the system works and start using it immediately. You will quickly learn the basics to working with the Unix command line as well as work on specific tutorials/exercises, including: browsing and searching the directory file-system; viewing, searching, and processing file content; using text editors; shell scripting; cool commands; and more.