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Full Discussion: Parsing a $VARIABLE within a script.
Top Forums Shell Programming and Scripting Parsing a $VARIABLE within a script. Post 302706367 by dlundwall on Wednesday 26th of September 2012 02:52:22 PM
Old 09-26-2012
Example which may help...
Quote:
Originally Posted by Don Cragun
You're right. That doesn't give us much of an answer.

Please show us a few examples (using code tags) of actual event messages.
Then given those messages, tell us exactly what you want to get as a result of processing them. If what you want to get out of a message depends on a SetScript, tell us how to find the SetScript associated with an arbitrary message and show us relevant examples of SetScript contents.
let me see if I can supply what you are asking for:

Here is a sample of an event message file:
Code:
{d "%w- %d %m-, %Y - %T"} - Device {m} of type {t} is no longer responding to requests.  This condition has persisted for more than 3 minutes.
 
Alert Code: {S 1}
Server Instance: {I 2}
Severity: {S 100}

Here is a sample of the same event message when I get it in the application with an alert that has been processed:
Code:
Sept 21, 2012 8:21:55 PM MDT - Device Main_Server_01 of type Host_Server is no longer responding to requests.  This condition has persisted for more than 3 minutes.
 
Alert Code: Danger
Server Instance: 31415
Severity: Critical

I am looking to get, as an example, the Server Instance value. The event file uses {I 2} which represents the 2nd varbind in the trap that is being sent, and the value is an Integer. I obviously don't care about the literal "{I 2}" portion, I am interested in the value that it is bringing back: 31415.

So in the SetScript it would look something like this:

Code:
# echo "EventMessage: $EVENTMSG"
echo "Server Instance Error: " $SI

where $SI is the value taken from the $EVENTMSG that I will hopefully be able to parse.
 

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LEARN ABOUT SUSE

printenv

PRINTENV(1)							   User Commands						       PRINTENV(1)

NAME

       printenv - print all or part of environment

SYNOPSIS

       printenv [VARIABLE]...
       printenv OPTION

DESCRIPTION

       Print the values of the specified environment VARIABLE(s).  If no VARIABLE is specified, print name and value pairs for them all.

       --help display this help and exit

       --version
	      output version information and exit

       NOTE:  your  shell may have its own version of printenv, which usually supersedes the version described here.  Please refer to your shell's
       documentation for details about the options it supports.

AUTHOR

       Written by David MacKenzie and Richard Mlynarik.

REPORTING BUGS

       Report printenv bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2009 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       The full documentation for printenv is maintained as a Texinfo manual.  If the info and printenv programs are properly  installed  at  your
       site, the command

	      info coreutils 'printenv invocation'

       should give you access to the complete manual.

GNU coreutils 7.1						     July 2010							       PRINTENV(1)
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