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Top Forums UNIX for Dummies Questions & Answers Identify duplicate words in a line using command Post 302115787 by ghostdog74 on Friday 27th of April 2007 09:38:02 AM
Old 04-27-2007
If you have Python, here's a neater alternative:
Code:
#!/usr/bin/python
for line in open("file"):
    line = line.strip().split(",")
    if len(line) == len(set(line)):
        print "No change"
    else:
        print ','.join(line)

output:
Code:
# ./test.py
No change
apple,mango,orange,apple,grape
unix,windows,solaris,windows,linux
No change
orange,maroon,pink,violet,orange,pink

 

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ARSORT(3)								 1								 ARSORT(3)

arsort - Sort an array in reverse order and maintain index association

SYNOPSIS
bool arsort (array &$array, [int $sort_flags = SORT_REGULAR]) DESCRIPTION
This function sorts an array such that array indices maintain their correlation with the array elements they are associated with. This is used mainly when sorting associative arrays where the actual element order is significant. 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 arsort(3) example <?php $fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); arsort($fruits); foreach ($fruits as $key => $val) { echo "$key = $val "; } ?> The above example will output: a = orange d = lemon b = banana c = apple The fruits have been sorted in reverse alphabetical order, and the index associated with each element has been maintained. SEE ALSO
asort(3), The comparison of array sorting functions. PHP Documentation Group ARSORT(3)
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