awk - Unix, Linux Command---reference

Action statements are enclosed in braces,?{?and?}. Action statements consist of the usual assignment,conditional,and looping statements found in most languages. The operators,control statements,and input/output statements available are patterned after those in C.

Operators

The operators in?AWK,in order of decreasing precedence,are

<table class="src" border="1" cellspacing="0" cellpadding="5">

</tr>
<tr valign="top">
<td>++ --</td>
<td valign="bottom">Increment and decrement,both prefix and postfix.</td>

</tr>
<tr valign="top">
<td>^</td>
<td valign="bottom">Exponentiation (?may also be used,and?=?for the assignment operator).</td>

</tr>
<tr valign="top">
<td>+ - !</td>
<td valign="bottom">Unary plus,unary minus,and logical negation.</td>

</tr>
<tr valign="top">
<td>* / %</td>
<td valign="bottom">Multiplication,division,and modulus.</td>

</tr>
<tr valign="top">
<td>+ -</td>
<td valign="bottom">Addition and subtraction.</td>

</tr>
<tr valign="top">
<td>space</td>
<td valign="bottom">String concatenation.</td>

</tr>
<tr valign="top">
<td>
< >?<= >=?!= ==
</td>
<td valign="bottom">The regular relational operators.</td>

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