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AwkTips
<toc> ---- == Be idiomatic! In this paragraph, we give some hints on how to write more idiomatic . . . line, $4 is an empty string, so awk considers it false for the purposes of the test. In the second line, . . . it like a number, ie zero. Since 0 is considered false, the test is unsuccesful and the substitution . . . if sees the string "0", which is not considered false, and the test succeeds, just as we wanted. As . . .
31K - last updated 2009-03-24 16:54 UTC by waldner

branch
A branch is a [[control structure]] that allow a particular section of code to be conditionally executed . . . of a [[boolean expression]] evaluates to true or false. === Using conditional keywords === The [[awk]] . . .
1K - last updated 2011-04-17 06:37 UTC by markhobley

comparative operator
The comparative operators are used to determine equality or inequality or otherwise make comparisons . . . evaluates to a value of one, whereas a false comparision evaluates to zero. The following . . .
3K - last updated 2013-02-24 17:38 UTC by markhobley

logical operator
In [[awk]], *logical operators* are used to perform [[boolean]] operations, and a return a value of [true] . . . or [false], depending on the values of the [operand]s. . . . [[operand]]s are [[true]], otherwise returns [[false]] | [[or]] | [[doublepipe]] | Returns [[true]] . . . [[operand]]s are [[true]], otherwise returns [[false]] | [[not]] | [[pling !]] | Returns [[false] . . . operators return a [[boolean]] value of 0 for [[false]], and 1 for [[true]]. In [[awk]], the null [[string]]s . . .
3K - last updated 2009-01-02 11:13 UTC by pgas

operator
The [[awk]] programming language provides a series of *operators* that allow [[value]]s and [[variable]]s . . . operations, returning either [[true]] or [[false]]. == nudge operators * [[nudge operator]]s == . . .
3K - last updated 2011-05-24 22:19 UTC by markhobley

pattern
In [[awk]], patterns are used to select lines of input for processing. The pattern within each [[rule]] . . . because a value of zero is considered to be false 1 {print "Goodbye"} # This will cause output, . . .
2K - last updated 2011-05-19 18:18 UTC by markhobley

truth
== Boolean Truth == A **boolean [[expression]]** has only two outcomes: **true** or **false**. In [[awk]], . . . the numeric value 0 or to the empty string are false. The rest is true. **There is not keyword for . . . true or false** in awk. This is a [[pitfall]] because true . . . awk 'BEGIN{if (true) {print "true"} else {print "false"}}' false }}} | **Value** | **True/False** | . . . 0 | false | 1 | true | -1 | true | "abc" | true | "0" | . . .
3K - last updated 2013-02-20 17:34 UTC by markhobley

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