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Top Forums Shell Programming and Scripting How to check directory exist on servers Post 302173258 by bakunin on Thursday 6th of March 2008 05:29:22 AM
Old 03-06-2008
If you want to go for ksh (i would recommend that, sorry, Smiling Dragon), you do not need the "`expr ....`"-constructs. Further, you terminate your loops based on your knowledge how many array entries there are (3 in your case). You could make that dynamic so you wouldn't have to change the code there if you add more entries to your arrays.

Notice that "${#arr[*]}" gives you the number of elements in the array "arr[]". Inside double brackets you can do integer math: "(( var3 = var1 + var2 ))". You have to surround the brackets with spaces, though. "((var1..." is wrong, "(( var1..." is ok.

Code:
typeset    arr[1]="first"
typeset   arr[2]="second"
typeset   arr[3]="third"
typeset   arr[4]="fourth"
typeset -i index=1

(( index = 1 ))
while [ $index -le ${#arr[*]} ] ; do
     print - "element to work on: ${arr[$index]}"
     (( index =+ 1 ))
done

I hope this helps.

bakunin
 

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COLLATOR_ASORT(3)							 1							 COLLATOR_ASORT(3)

Collator::asort - Sort array maintaining index association

       Object oriented style

SYNOPSIS
public bool Collator::asort (array &$arr, [int $sort_flag]) DESCRIPTION
Procedural style bool collator_asort (Collator $coll, array &$arr, [int $sort_flag]) 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. Array elements will have sort order according to current locale rules. Equivalent to standard PHP asort(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 $sort_flag value 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_asort(3)example <?php $coll = collator_create( 'en_US' ); $arr = array( 'a' => '100', 'b' => '50', 'c' => '7' ); collator_asort( $coll, $arr, Collator::SORT_NUMERIC ); var_export( $arr ); collator_asort( $coll, $arr, Collator::SORT_STRING ); var_export( $arr ); ?> The above example will output: array ( 'c' => '7', 'b' => '50', 'a' => '100', )array ( 'a' => '100', 'b' => '50', 'c' => '7', ) SEE ALSO
Collator constants, collator_sort(3), collator_sort_with_sort_keys(3). PHP Documentation Group COLLATOR_ASORT(3)
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