Try the following use of a while loop if it fits in with your application logic. It is a neat short cut that may work for your app. The <pattern> construct uses the glob function internally. Details on the patterns that you can use in File::Glob 

while (</apps/inst2/metrica/ON-SITE/backup/schema/*.tdef>){
    print;
}

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The while loop gets to process the files that match the pattern.

In reply to Re: specifying file extension in opendir function by inman
in thread specifying file extension in opendir function by greatshots

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