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Full Discussion: Bash question: working with an array of previously set variable strings
Top Forums Shell Programming and Scripting Bash question: working with an array of previously set variable strings Post 302927251 by hungryd on Monday 1st of December 2014 05:04:50 PM
Old 12-01-2014
Display Bash question: working with an array of previously set variable strings
while i've used arrays to work with variables, i've never used them to loop through a set of strings and wanted to ask the community for some feedback or assistance.

let me be specific. here's my code:

Code:
# URL port Variables
port2195=`nc -z $url2195 2195`
port2196=`nc -z $url2196 2196`
port5223=`nc -z $url5223 5223`
port443=`nc -z $url443 443`

# Set array
range=( port2195 port2196 port5223 port443 )

echo ""
echo "Now checking the ports..."
echo ""

for i in "${range[@]}"
do
	if [[ "$i" = *succeeded* ]];
	then
		echo "SUCCESS: $i is open/working."
	else
		echo "FAILURE: $i is NOT open/working."
	fi	
done

this code works just fine.... just not in the way that i want!

the script is passing the members of the array exactly as i've typed them, one at a time: port2195, port2196, port5223, etc.

what i'm trying to do and failing to achieve is to pass each member of the array as a previously established string: $port2195, $port2196, $port5223, etc.

changing the names of each member of the array to include a "$", doesn't work, neither does adding a second "$" into the if statement.

i'm not even sure if you can pass strings via an array but, if it is possible, much obliged for someone to drop me a few pointers.

cheers,
 

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LEARN ABOUT PHP

array_product

ARRAY_PRODUCT(3)							 1							  ARRAY_PRODUCT(3)

array_product - Calculate the product of values in an array

SYNOPSIS

       number array_product (array  $array)

DESCRIPTION

       array_product(3) returns the product of values in an array.

PARAMETERS

	      o $array
		- The array.

RETURN VALUES

	Returns the product as an integer or float.

CHANGELOG

       +--------+---------------------------------------------------+
       |Version |						    |
       |	|						    |
       |	|		     Description		    |
       |	|						    |
       +--------+---------------------------------------------------+
       | 5.3.6	|						    |
       |	|						    |
       |	|  The	product  of  an  empty array is now 1, when |
       |	| before this function would return 0 for an  empty |
       |	| array.					    |
       |	|						    |
       +--------+---------------------------------------------------+
EXAMPLES

       Example #1

	      array_product(3) examples

	      <?php

	      $a = array(2, 4, 6, 8);
	      echo "product(a) = " . array_product($a) . "
";
	      echo "product(array()) = " . array_product(array()) . "
";

	      ?>

	      The above example will output:

	      product(a) = 384
	      product(array()) = 1

PHP Documentation Group 													  ARRAY_PRODUCT(3)
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