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Top Forums UNIX for Dummies Questions & Answers help! Post 90435 by mschwage on Tuesday 22nd of November 2005 03:31:51 PM
Old 11-22-2005
Very simply, traceroute is a utility that shows you a route your packets will take to get from point A (probably your house or work) to point B (say, www.google.com).

Say you are surfing to the web. First you go to google, which is located in California. Then you go to www.linux.de, which (I think) is in Germany. You suppose that sound engineering principles are used to route packets from your computer to those remote computers- it's not magic! :-)

How are they routed? ...Not so simple. Where are they routed? Traceroute will show you. However, traceroute is a snapshot of *a* route your packets *may* take. It's not guaranteed to be *the* route your packets are taking *right now*. In other words, if you go to www.google.com, a moment later run traceroute www.google.com, then a moment later go to www.google.com (again in your web browser), your packets did not necessarily all go through the same devices each time. However, traceroute gives you a good general idea about where your network packets are flying in the wondrous ether of the Internet.
-Mike
 
URI::URL(3)						User Contributed Perl Documentation					       URI::URL(3)

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 v5.12.5 2011-08-13 URI::URL(3)
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