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Full Discussion: Pick the latest set of files
Top Forums Shell Programming and Scripting Pick the latest set of files Post 302283591 by quirkasaurus on Tuesday 3rd of February 2009 03:20:10 PM
Old 02-03-2009
Quote:
Originally Posted by jim mcnamara
assume you have a file with the filenames - call it inputfile - this is a longer example - plus -rnu will not work across _ characters.
Code:
tr -s '_' ' ' <  inputfile | \
  sort -n -k 1.1,1.1 -k 2.1,2.8 -k 3.1,3.6 | \
  awk '{ arr[$1]=$0 } END {for (i in arr) { print arr[i] } }' | \
  tr '_' ' ' | sort > resultsfile

i'm only pulling out the 4th field and piping to sort -rn.
( I tested it first; it works. )

My assumption was that the files were ~named~ with the
correct time-stamps, but the modification times on the files
themselves weren't necessarily correct....

If the file-modification-times are correct,
giannicello's solution works fine.
 

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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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