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Full Discussion: Need Help with Awk Command
Top Forums Shell Programming and Scripting Need Help with Awk Command Post 302687901 by mjf on Friday 17th of August 2012 08:11:04 AM
Old 08-17-2012
sanranad,
Here's the code if you wanted to group by column's P, Q and X (not just column X as you requested) if your input file should have different values for column P and Q as well. The output from this does not inlcude the 4th column Y from the input file which I assume you don't want since it's not in your output file example (again, need to post sample input file).

Code:
awk -F'|' '{arr[$1 "|" $2 "|" $3]++} END {for (i in arr) print i"|"arr[i]}' input.file

 

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COLLATOR_SORT(3)							 1							  COLLATOR_SORT(3)

Collator::sort - Sort array using specified collator

	Object oriented style

SYNOPSIS
public bool Collator::sort (array &$arr, [int $sort_flag]) DESCRIPTION
Procedural style bool collator_sort (Collator $coll, array &$arr, [int $sort_flag]) This function sorts an array according to current locale rules. Equivalent to standard PHP sort(3) . PARAMETERS
o $coll -Collator object. o $arr - Array of strings to sort. o $sort_flag - Optional sorting type, one of the following: o Collator::SORT_REGULAR - compare items normally (don't change types) o Collator::SORT_NUMERIC - compare items numerically o Collator::SORT_STRING - compare items as strings Default sorting type is Collator::SORT_REGULAR. It is also used if an invalid $sort_flag value has been specified. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 collator_sort(3) example <?php $coll = collator_create( 'en_US' ); $arr = array( 'at', 'as', 'as' ); var_export( $arr ); collator_sort( $coll, $arr ); var_export( $arr ); ?> The above example will output: array ( 0 => 'at', 1 => 'as', 2 => 'as', )array ( 0 => 'as', 1 => 'as', 2 => 'at', ) SEE ALSO
Collator constants, collator_asort(3), collator_sort_with_sort_keys(3). PHP Documentation Group COLLATOR_SORT(3)
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