Getting Started with Ubuntu 10.04 is a comprehensive beginners guide for the Ubuntu operating system. It is written under an open source license and is free for you to download, read, modify and share.
The manual will help you become familiar with everyday tasks such as surfing the web, listening to music and scanning documents. With an emphasis on easy to follow instructions, it is suitable for all levels of experience.
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 grep  is a very useful terminal command used to search for text within files, the default is to print all lines that contain the given string.