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Full Discussion: Netstat -i notification
Operating Systems Linux Netstat -i notification Post 302703847 by Corona688 on Thursday 20th of September 2012 12:25:55 PM
Old 09-20-2012
You've got some useless use of cat in there.

I wouldn't bother processing the logfile except when you use it. You can do so in one step.

I might do this:

Code:
netstat -us > newlogfile

[ -f oldlogfile ] && awk '(NR==FNR) && $6 { A[$1]=$6; next } # Store old log file errors in array A
        $1 in A { print $1, $6-A[$1] } # If the interface is found in A, print interface-name, difference of errors
        ' oldlogfile newlogfile

mv newlogfile oldlogfile # Replace logfile


Last edited by Corona688; 09-20-2012 at 01:36 PM..
 

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URI::URL(3pm)						User Contributed Perl Documentation					     URI::URL(3pm)

NAME
URI::URL - Uniform Resource Locators SYNOPSIS
$u1 = URI::URL->new($str, $base); $u2 = $u1->abs; DESCRIPTION
This module is provided for backwards compatibility with modules that depend on the interface provided by the "URI::URL" class that used to be distributed with the libwww-perl library. The following differences exist compared to the "URI" class interface: o The URI::URL module exports the url() function as an alternate constructor interface. o The constructor takes an optional $base argument. The "URI::URL" class is a subclass of "URI::WithBase". o The URI::URL->newlocal class method is the same as URI::file->new_abs. o URI::URL::strict(1) o $url->print_on method o $url->crack method o $url->full_path: same as ($uri->abs_path || "/") o $url->netloc: same as $uri->authority o $url->epath, $url->equery: same as $uri->path, $uri->query o $url->path and $url->query pass unescaped strings. o $url->path_components: same as $uri->path_segments (if you don't consider path segment parameters) o $url->params and $url->eparams methods o $url->base method. See URI::WithBase. o $url->abs and $url->rel have an optional $base argument. See URI::WithBase. o $url->frag: same as $uri->fragment o $url->keywords: same as $uri->query_keywords o $url->localpath and friends map to $uri->file. o $url->address and $url->encoded822addr: same as $uri->to for mailto URI o $url->groupart method for news URI o $url->article: same as $uri->message SEE ALSO
URI, URI::WithBase COPYRIGHT
Copyright 1998-2000 Gisle Aas. perl v5.14.2 2012-02-11 URI::URL(3pm)
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