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The operators in awk, in order of decreasing precedence, are:
(...)
-
Grouping.
$
-
Field reference.
++ --
-
Increment and decrement, both prefix and postfix.
^
-
Exponentiation (`**' may also be used, and `**=' for the assignment
operator, but they are not specified in the POSIX standard).
+ - !
-
Unary plus, unary minus, and logical negation.
* / %
-
Multiplication, division, and modulus.
+ -
-
Addition and subtraction.
space
-
String concatenation.
< <= > >= != ==
-
The usual relational operators.
~ !~
-
Regular expression match, negated match.
in
-
Array membership.
&&
-
Logical "and".
||
-
Logical "or".
?:
-
A conditional expression. This has the form `expr1 ?
expr2 : expr3'. If expr1 is true, the value of the
expression is expr2; otherwise it is expr3. Only one of
expr2 and expr3 is evaluated.
= += -= *= /= %= ^=
-
Assignment. Both absolute assignment (
var=value)
and operator assignment (the other forms) are supported.
See section Expressions.
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