It is fairly easy to translate your system call to pure perl:

use strict;
use warnings;

open my $dev, "<", "/proc/net/dev" or die $!;
my ($eth0) = grep {/eth0/} <$dev>;
close $dev;

my $k = (split /\s+/,$eth0)[1];
$k =~ s/eth0://g;
print "$k\n";

[download]

Outputs:

190722498

[download]

In reply to Re: system command question by citromatik
in thread system command question by Anonymous Monk

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