Table of Contents
1.00 Introduction 1.01 Document Conventions 1.02 Copyright Notice 1.03 Feedback 2.00 Linux 3.00 Terminology 4.00 Directory Structure 5.00 Commands 5.01 Help Utilities 5.02 Files/Directories Utilities 5.03 Users and System Information Utilities 5.04a Permissions 5.04b Ownership, Permissions and Links Utilities 5.05 Hardware Utilities 5.06 Filter Utilities 5.07 Location Utilities 5.08 De&Compression Utilities 5.09 Jobs control Utilities 5.10 Networking Utilities 5.11 System & Admin and other Utilities 6.00 Symbols, Expansions 6.01 Key Combinations 6.02 Redirection Operators 6.03 Symbol Commands 6.04 File Descriptor 6.05 File Types (long list) 6.06 Wildcards 6.07 Common Regular Expressions 6.08 Extended Regular Expressions 7.00 Parameters and Variable, Attributes 7.01 Variable Commands 7.02 User Created Variables 7.03 Special Modifiers 7.04 Bash Keyword Variables 7.05 Positional Parameters 7.06 Escape Sequance 8.0 Vim 9.0 Scripts 10.00 Conclusion unnamed1
2.00 Linux
Unix-like computer operating system
Based on a Linux kernel # (1991 Linus Torvalds started working on the Linux kernel)
Includes system utilities and libraries from the GNU Project # (Founded by Richard Stallman in 1984)
Follows the philosophy of the open source movement
71% of code was written in the c programing language
In 2001 Red Hat 7.1 contained 30million source lines of code
It was estimated that it would:
Take eight thousand man-years of development time
It would cost 1.08 billion dollars
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