How to grep a word and the two lines before? Post: 302572253

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Top Forums UNIX for Dummies Questions & Answers How to grep a word and the two lines before? Post 302572253 by npatao71 on Wednesday 9th of November 2011 12:09:19 PM

11-09-2011

Registered User

How to grep a word and the lines before?

Hi

I have this txt file getting from a lpstat command.

Code:

XA40 XA40 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
0 Unknown specified 0 0 1 1 3
XA99 @spip READY 
: (FATAL ERROR) 0781-233 Unknown host spiprs01.mon.local.
XA01 @xs00 READY 
XA01 XA01 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
0 Unknown specified 0 0 1 1 3
XA07 @xs00 READY 
XA07 XA07 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
0 Unknown specified 0 0 1 1 3
0 Unknown specified 0 0 1 1 3
0 Unknown 0 0 1 1 4
0 Unknown Status 0 0 1 1 5
0 Unknown 0 0 1 1 6
xA45 @diwp READY 
: (FATAL ERROR) 0781-233 Unknown host diwpsnt1.dgw.unix.com
XA32 @xs00 READY 
XA32 XA32 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
0 Unknown 0 0 1 1 3
0 Unknown 0 0 1 1 4
0 Unknown Status 0 0 1 1 5
0 Unknown 0 0 1 1 6
XA64 @xs00 READY 
XA64 XA64 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
 
XA10 @xs00 READY 
XA10 XA10 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
0 Unknown specified 0 0 1 1 3
XA48 @xs00 READY 
XA48 XA48 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
0 Unknown specified 0 0 1 1 3
XA68 @xs00 READY 
XA68 XA68 0 Unknown 0 0 1 1 1
0 Unknown LPD 0 0 1 1 2
0 Unknown specified 0 0 1 1 3
0 Unknown 0 0 1 1 4

How can i grep the word "ERROR" and the lines before (where are the id of the printer in error) and send the result to my mail?

Last edited by npatao71; 11-10-2011 at 06:30 AM.. Reason: Please use code tags

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ppi::structure::unknown5.18

PPI::Structure::Unknown(3)				User Contributed Perl Documentation				PPI::Structure::Unknown(3)

NAME

       PPI::Structure::Unknown - An unknown or unresolved brace structure

INHERITANCE

	 PPI::Structure::Unknown
	 isa PPI::Structure
	     isa PPI::Node
		 isa PPI::Element

DESCRIPTION

       "PPI::Structure::Unknown" is class for braces whose type is unknown, or temporarily unknown.

       It primarily exists temporarily inside the lexer. Although some types of braces can be determined immediately at opening, there are a
       number of different brace types that can only be correctly identified after the braces are closed.

       A structure is typed as unknown during this period it is indeterminate.

       A "PPI::Structure::Unknown" object should not ever make it out of the lexer without being converted to it's final type. Any time you
       encounter this class in a PDOM tree it should be considered a bug and reported accordingly.

METHODS

       "PPI::Structure::Unknown" has no methods beyond those provided by the standard PPI::Structure, PPI::Node and PPI::Element methods.

       Got any ideas for methods? Submit a report to rt.cpan.org!

SUPPORT

       See the support section in the main module.

AUTHOR

       Adam Kennedy <adamk@cpan.org>

COPYRIGHT

       Copyright 2001 - 2011 Adam Kennedy.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

       The full text of the license can be found in the LICENSE file included with this module.

perl v5.18.2							    2011-02-25						PPI::Structure::Unknown(3)