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Full Discussion: Text formatting
Top Forums Shell Programming and Scripting Text formatting Post 302476607 by Franklin52 on Thursday 2nd of December 2010 05:35:08 AM
Old 12-02-2010
Quote:
Originally Posted by R0H0N
please explain this command, as I didn't understand
Code:
awk '{ORS=NR%3==1?"-":NR%3==2?FS:RS}1' file

To determine the ORS (output record separator) we use a modulo and a conditional operator.
Code:
ORS=NR%3==1?"-" If NR%3==1 ORS="-"
:NR%3==2?FS:RS ...else if NR%3==2 ORS=FS else ORS=RS

If these stuff is new to you can have read of:

Awk tutorial:

Awk - A Tutorial and Introduction - by Bruce Barnett

Modulo operator:

Modulo operation - Wikipedia, the free encyclopedia

Conditional operator:

?: - Wikipedia, the free encyclopedia
 

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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 v5.16.2 2012-02-11 URI::URL(3)
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