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Top Forums Shell Programming and Scripting AWK help. how to compare a variable with a data array in AWK? Post 302413711 by usustarr on Friday 16th of April 2010 05:49:18 PM
Old 04-16-2010
AWK help. how to compare a variable with a data array in AWK?

Hi all,

i have a data array as follows.
Code:
array[0]=ertfgj2345
array[1]=456ttygkd
.
.
.
array[n]=errdjt3235

so number or elements in the array can varies depending on how big the data input is.

now i have a variable, and it is $1 (there are $2, $3 and so on, i am only interested in $1).

in K shell my code would be as follows,
Code:
z=0
while [[ $z -lt ${array[*]} ]] ; do
   if [[ ${array[$z]} == "$1" ]]
   then
   print " found a match from list "
   let z=$z+1
 
   else
   print " no match "
   let z=$z+1
   fi
done


This works fine in Kshell. However i am editing a scritp that has been written in kshell and AWK. So the part i am working on is written in AWK and AWK doesnt like my while loop. Can someone help me with this please? Smilie

Last edited by vgersh99; 04-16-2010 at 06:52 PM.. Reason: code tags, please!
 

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ARRAY_PUSH(3)								 1							     ARRAY_PUSH(3)

array_push - Push one or more elements onto the end of array

SYNOPSIS
int array_push (array &$array, mixed $value1, [mixed $...]) DESCRIPTION
array_push(3) treats $array as a stack, and pushes the passed variables onto the end of $array. The length of $array increases by the num- ber of variables pushed. Has the same effect as: <?php $array[] = $var; ?> Note If you use array_push(3) to add one element to the array it's better to use $array[] = because in that way there is no overhead of calling a function. Note array_push(3) will raise a warning if the first argument is not an array. This differs from the $var[] behaviour where a new array is created. PARAMETERS
o $array - The input array. o $value1 - The first value to push onto the end of the $array. RETURN VALUES
Returns the new number of elements in the array. EXAMPLES
Example #1 array_push(3) example <?php $stack = array("orange", "banana"); array_push($stack, "apple", "raspberry"); print_r($stack); ?> The above example will output: Array ( [0] => orange [1] => banana [2] => apple [3] => raspberry ) SEE ALSO
array_pop(3), array_shift(3), array_unshift(3). PHP Documentation Group ARRAY_PUSH(3)
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