07-01-2008
Quote:
Originally Posted by
clarcombe
Excellent. That works perfectly
What does the -k4,4n -k5,5r mean. I understand the 4n part but what does the , do?
I modified the command
sort -t '|' -k4n -k5r BPC_TRANS_CHARG000009_000_Anomalie.csv and this works as well
Thanks.
Colin
The -k4,4n -k5,5r first sorts numerically on the fourth field and then sorts on the fifth field in reverse order. The 5th field sort is a sub-sort that is it sorts the 5th field based on the sorted contents of the 4th field.The comma in -k separates the start and stop fields. In -k5r the start field is the 5th one and as no stop field is given it defaults to the end of the line. The sort manpage provides a better explanation.
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RSORT(3) 1 RSORT(3)
rsort - Sort an array in reverse order
SYNOPSIS
bool rsort (array &$array, [int $sort_flags = SORT_REGULAR])
DESCRIPTION
This function sorts an array in reverse order (highest to lowest).
PARAMETERS
o $array
- The input array.
o $sort_flags
- You may modify the behavior of the sort using the optional parameter $sort_flags, for details see sort(3).
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
rsort(3) example
<?php
$fruits = array("lemon", "orange", "banana", "apple");
rsort($fruits);
foreach ($fruits as $key => $val) {
echo "$key = $val
";
}
?>
The above example will output:
0 = orange
1 = lemon
2 = banana
3 = apple
The fruits have been sorted in reverse alphabetical order.
NOTES
Note
This function assigns new keys to the elements in $array. It will remove any existing keys that may have been assigned, rather than
just reordering the keys.
SEE ALSO
arsort(3), krsort(3), The comparison of array sorting functions.
PHP Documentation Group RSORT(3)