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Backing up and restoring Debian packages 
95
Cleaning up orphaned apt packages 
97
Taking advantage of hardware enablement updates 
98
Summary 101
Further reading 
101
Chapter 4: Navigating and Essential Commands 
103
Learning essential Linux commands 
104
Understanding the Linux filesystem layout 
108

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Table of Contents
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 iii 
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Viewing the contents of files 
111
Viewing application log files 
114
Summary 116
Further reading 
116
Chapter 5: Managing Files and Directories 
117
Copying, moving, and renaming files and directories 
118
Editing files with the Nano and Vim text editors 
120
Editing with Nano 
121
Editing with Vim 
123
Input and output streams 
132
Using symbolic and hard links 
135
Summary 138
Further reading 
138
Chapter 6: Boosting Your Command-line Efficiency 
139
Understanding the Linux shell 
140