> Out of which I need to pick only file2, file3, file4

But why? Do you just want to skip the shortest name? If so, use length instead of a regex. Otherwise, try to explain how you select the files to stay or move.

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

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In reply to Re^5: Regex lookahead, lookbehind by choroba
in thread Regex lookahead, lookbehind by rahulme81

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