I see one mistake. Change: 
    my $filename = @_;

[download]

to: 

    my $filename = $_[0];

[download]

Your code always assigns $filename=1, instead of the actual file name. Prove this to yourself by printing $filename inside your sub right after the assignment.

See also: Basic debugging checklist

In reply to Re: Subroutine processes only one file in the directory by toolic
in thread Subroutine processes only one file in the directory by sridhar56

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