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
6.07 Common Regular Expression
Symbol
Description
*
match a single character
?
[a-z]
matches a range of characters. [a through z]
[abcd]
matches a range of characters specified within the brackets [a,b,c or d]
\?
matches ?, since ? Is a special character
^abc
matches abc a the beginning of the line
$abc
matches abc at the end of the line
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