Effective awk Programming, 4th Edition

Index

Symbols

! (exclamation mark)

!= (not equal) operator, Changing the Contents of a Field, Comparison operators, Operator Precedence (How Operators Nest)

!~ operator, How to Use Regular Expressions, Using Dynamic Regexps, Regular expression constants, Comparison operators, Operator Precedence (How Operators Nest), Expressions as Patterns

not operator, Boolean Expressions, Operator Precedence (How Operators Nest), Searching for Regular Expressions in Files

" (quotation marks, double)

denoting null strings, Shell Quoting Issues

enclosing string constants, Numeric and string constants

escaping in string constants, Escape Sequences

mixing with single quotes, Shell Quoting Issues

shell rules for, Shell Quoting Issues

# (number sign)

#! script mechanism, Executable awk Programs, Running the Example Programs

format specification modifiers, Modifiers for printf Formats

prefacing awk comments, Comments in awk Programs

$ (dollar sign)

$0 value

in BEGIN and END rules, Input/output from BEGIN and END rules

set by getline, Using getline with No Arguments

understanding, Changing the Contents of a Field

end-of-string matching in regular expressions, Regular Expression Operators, Record Splitting with gawk

field references in awk, Examining Fields, Operator Precedence (How Operators Nest)

% (percent sign)

%= (modulus and assignment) operator, Assignment Expressions, Operator Precedence (How Operators Nest)

remainder operator, Arithmetic Operators, Operator Precedence (How Operators Nest)

& (ampersand)

&& (Boolean and) ...