Hello GSperlbio,

Yet another option is to use the core Tie::File module:

#! perl
use strict;
use warnings;
use Tie::File;

my $data = 'uuu.txt';

tie my @lines, 'Tie::File', $data
    or die "Cannot tie file '$data': $!";

s{[^ACGT]}{}g for @lines;

untie @lines;

[download]

But note that this will not remove newlines.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: Removing white space from the file by Athanasius
in thread Removing white space from the file by GSperlbio

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