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====== AWK - AWK Output ======

Assuming a file, **test.txt** exists with the following contents:

<file>
10   Peter     Terence   Roux        45
11   Virginia  Genevieve  Roux        45
12   Felix     Devon     Roux         5
13   David     Bruce     Stevenson   48
14   Bob       James     Smith       16
48   Adam      Winter    Ridley      23
</file>

----

===== Display Tidy Output =====

Multiple commands can be passed together.

<code awk>
awk '/45/ {print $2,$3,$4} {print $1": "$5"\n"}' test.txt
</code>

returns:

<code>
Peter Terence Roux
10: 45

Virginia Genevieve Roux
11: 45

12: 5

13: 48

14: 16

48: 23
</code>

<WRAP info>
**NOTE:**  This inserts a colon and a space and comma between $1 and $5.

It also inserts new line after each two-line display.

</WRAP>

----

Certain escape sequences are supported, including:

^Character^Details^
|\\|A literal backslash.|
|\b|Backspace.|
|\f|Formfeed.|
|\n|New line.|
|\r|Carriage return.|
|\t|Horizontal tab.|
|\v|Vertical tab.|
|\xhh|Hex digits where hh represents the hex digits. E.g. \x2F|

----

===== Adding Text =====

Additional text can be added to lines.

<code awk>
awk '/45/ {print "NAME: "$2,$3,$4 "\tAGE: "$5}' test.txt
</code>

returns:

<code>
NAME: Peter Terence Roux	AGE: 45
NAME: Virginia Genevieve Roux	AGE: 45
</code>

<WRAP info>
**NOTE:**  The values between double quotes can be anything.
</WRAP>


----

===== Advanced Text Output =====

<code awk>
awk '/45/ {printf ("%s %d %x %s\n", $2,$5,$5,"x")}' test.txt
</code>

returns:

<code>
Peter 45 2d x
Virginia 45 2d x
</code>

<WRAP info>
**NOTE:**  The **printf** command can be used to handle more complex output requirements.

This is the list of specifications supported by the printf command:

^Specification^Details^
|%c|Prints a single ASCII character.|
|%d|Prints a decimal number.|
|%e|Prints a scientific notation representation of numbers.|
|%f|Prints a floating-point representation.|
|%g|Prints %e or %f; whichever is shorter.|
|%o|Prints an unsigned octal number.|
|%s|Prints an ASCII string.|
|%x|Prints an unsigned hexadecimal number.|
|%%|Prints a percent sign; no conversion is performed.|


</WRAP>

----