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open (FNAMES, "<$Form{han}.txt") or die "Cannot open $Form{han}.txt: $!\n"; ... close FNAMES; # close it before you unlink it. unlink "$Form{han}.txt" or die "Cannot unlink $Form{han}.txt: $!\n";
unlink "$Form{han}.txt" or die "Cannot unlink $Form{han}.txt: $!\n";