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
6.08 Extended Regular Expression
Symbol
Description
ab+c
a followed by one or more b's followed by a c
Example:
yabcx abbbbc94
'ab?c'
a followed by nothing or one b followed by a c
back abcdef
'(ab)+c'
one or more occurrences of the string ab followed by a c
zabcd abcabcxy
'(ab)?c'
no or one occurance of the string ab followed by c
xc abccc
'ab | ac'
either ab or ac
'^Exit|^Quit'
any line that begins with Exit or Quit
Exit Quit No Exit
'(D | N) |. Jones'
D.Jones or N.Jones
P.D. Jones N.Jones
Table of Contents
