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Top Forums Shell Programming and Scripting Regular expression query in AWK Post 302088879 by omprasad on Friday 15th of September 2006 01:50:55 AM
Old 09-15-2006
Question Regular expression query in AWK

I have a varable(var1) in a AWK script that contain data in the following format

[timestamp] [priority] - [log message]

I need to extract timestamp,priority and log message.I can extract these by using split function but i don't want to use it, since i want to extract it in one go. I have some difficulties in doing it using Regular expression using a single statement. Can anybody help me on this
 

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Agent::Tag::Priority(3pm)				User Contributed Perl Documentation				 Agent::Tag::Priority(3pm)

NAME
Log::Agent::Tag::Priority - a log priority tag string SYNOPSIS
Not intended to be used directly Inherits from Log::Agent::Tag. DESCRIPTION
This class represents a log priority tag string. CREATION ROUTINE PARAMETERS
The following parameters are defined, in alphabetical order: "-display" => string Specifies the priority/level string to display, with minimal variable substitution. For instance: -display => '[$priority/$level]' The defined variables are documented in the DISPLAY VARIABLES section underneath. "-level" => level This parameter is internally added by "Log::Agent" when computing the priority tag, since only it knows the level of the current messsage. "-postfix" => flag Whether tag should be placed after or before the log message. By default, it is prepended to the log message, i.e. this parameter is false. "-priority" => prio This parameter is internally added by "Log::Agent" when computing the priority tag, since only it knows the priority of the current messsage. "-separator" => string The separation string between the tag and the log message. A single space by default. DISPLAY VARIABLES
The "-display" switch understands a few variables that can be substituted in the supplied string. Both $var and "${var}" forms are supported. Unknown variables are left untouched. $priority The full priority name of the logged message, e.g. "warning" or "error". $level The associated priority level of the logged message, a number. For instance, the level associated to "warning" is 4. See Log::Agent::Priorities for the default name -> level mapping. AUTHOR
Raphael Manfredi <Raphael_Manfredi@pobox.com> SEE ALSO
Log::Agent::Tag(3), Log::Agent::Message(3), Log::Agent::Priorities(3). perl v5.10.0 2002-03-09 Agent::Tag::Priority(3pm)
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