In certain contexts, expression values also serve as “truth values”; i.e.,
they determine what should happen next as the program runs. This
section describes how
awk defines “true” and “false”
and how values are compared.
|• Truth Values||What is “true” and what is “false”.|
|• Typing and Comparison||How variables acquire types and how this
affects comparison of numbers and strings with
|• Boolean Ops||Combining comparison expressions using boolean
|• Conditional Exp||Conditional expressions select between two
subexpressions under control of a third subexpression.