Efficient Linux at the Command Line: Boost Your Command-Line Skills

The source is an excerpt from the book "Efficient Linux at the Command Line" by Vance Wilson, which covers advanced command-line techniques for navigating the Linux operating system and manipulating data. The book aims to teach readers how to combine simple commands into powerful pipelines and scripts for efficient and effective command-line use. The book delves into topics such as shell features, job control, process substitution, and text manipulation using commands like grep, awk, and sed. The excerpt specifically focuses on explaining concepts like command substitution, output redirection, and background commands, illustrating these techniques with various practical examples.

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