Is this the code you are actually using?   It looks like the line below won't do what you expect. 
  $new_str = substr($found_file, 0, index($found_file,'.new')) . '.new
+';

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If the old filename already ends '.new' you will replace '.new' with '.new' to get the old filename again.   If the old filename ends in something else, you will chop off the last character and then add '.new'.   "test.it" will become "test.i.new"

Otherwise isn't the problem just that you have renamed the file from the name $new_str to the name $found_file, and then try to change the times for the file named $new_str, which isn't there anymore?

In reply to Re: Apply mtime and atime to new file by shenme
in thread Apply mtime and atime to new file by APA_Perl

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