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Top Forums Shell Programming and Scripting Perl regexp to extract first and second column Post 302838131 by royalibrahim on Monday 29th of July 2013 03:08:53 AM
Old 07-29-2013
Perl regexp to extract first and second column

Hi,

I am trying with the below Perl one-liner using regular expression to extract the first and second column of a text file:
Code:
perl -p -e "s/\s*(\w+).*/$1/"
perl -p -e "s/\s*.+\s(.+)\s*/$1\n/"

whereas the text file's data looks like:
Code:
Error: terminated 2233
Warning: reboot 3434
Warning: filledup 4322

I am not getting the expected output, but blank. Kindly correct me in the code where I am doing wrong.
 

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HTML::FormatText(3)					User Contributed Perl Documentation				       HTML::FormatText(3)

NAME
HTML::FormatText - Format HTML as plaintext VERSION
version 2.11 SYNOPSIS
use HTML::TreeBuilder; $tree = HTML::TreeBuilder->new->parse_file("test.html"); use HTML::FormatText; $formatter = HTML::FormatText->new(leftmargin => 0, rightmargin => 50); print $formatter->format($tree); or, more simply: use HTML::FormatText; my $string = HTML::FormatText->format_file( 'test.html', leftmargin => 0, rightmargin => 50 ); DESCRIPTION
HTML::FormatText is a formatter that outputs plain latin1 text. All character attributes (bold/italic/underline) are ignored. Formatting of HTML tables and forms is not implemented. HTML::FormatText is built on HTML::Formatter and documentation for that module applies to this - especially "new" in HTML::Formatter, "format_file" in HTML::Formatter and "format_string" in HTML::Formatter. You might specify the following parameters when constructing the formatter: leftmargin (alias lm) The column of the left margin. The default is 3. rightmargin (alias rm) The column of the right margin. The default is 72. SEE ALSO
HTML::Formatter INSTALLATION
See perlmodinstall for information and options on installing Perl modules. BUGS AND LIMITATIONS
You can make new bug reports, and view existing ones, through the web interface at <http://rt.cpan.org/Public/Dist/Display.html?Name=HTML-Format>. AVAILABILITY
The project homepage is <https://metacpan.org/release/HTML-Format>. The latest version of this module is available from the Comprehensive Perl Archive Network (CPAN). Visit <http://www.perl.com/CPAN/> to find a CPAN site near you, or see <https://metacpan.org/module/HTML::Format/>. AUTHORS
o Nigel Metheringham <nigelm@cpan.org> o Sean M Burke <sburke@cpan.org> o Gisle Aas <gisle@ActiveState.com> COPYRIGHT AND LICENSE
This software is copyright (c) 2013 by Nigel Metheringham, 2002-2005 Sean M Burke, 1999-2002 Gisle Aas. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.18.2 2017-10-06 HTML::FormatText(3)
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