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Full Discussion: sed error: invalid reference
Top Forums Shell Programming and Scripting sed error: invalid reference Post 302708561 by dlundwall on Monday 1st of October 2012 06:16:54 PM
Old 10-01-2012
Question sed error: invalid reference
Hello all,
I am using sed to parse a particular part of a string and am having problems. I am getting the following error:
sed: -e expression #1, char 28: invalid reference \1 on `s' command's RHS
Here is the code I am using:
Code:
echo "Alarm SET:"
echo ""
echo "Date:            " $DATE
echo "Time:            " $TIME
echo "ModelName:       " $MNAME
TST=$(echo "$EVENTMSG" | sed -ne 's/.*odelName=(\w+[^.]+)/\1/p')
echo "Non-FQDN Name:    " $TST
Severity:                  " $SEV

Here is the output:
Code:
Alarm SET:
Date:             10/01/2012
Time:             13:26:49
ModelName:        twa-casql01.c.com
sed: -e expression #1, char 28: invalid reference \1 on `s' command's RHS
Non-FQDN Name:
Severity:         MAJOR

As you can see, something is not working when I try to parse $EVENTMSG. My expected outcome is:
Code:
Alarm SET:
Date:             10/01/2012
Time:             13:26:49
ModelName:        twa-casql01.c.com
Non-FQDN Name: twa-casql01
Severity:         MAJOR

Ultimately, I am trying to verify that the $MNAME is the non-FQDN formated name as the ModelName contained in the $EVENTMSG.

The regex syntax of:
Code:
(\w+[^.]+)

takes the FQDN (or Fully Qualified Domain Name) and pulls the dot (.) suffix off of it.

Any ideas?

MANY THANKS IN ADVANCE!!
Last edited by dlundwall; 10-01-2012 at 07:28 PM.. Reason: Unusual display??
 

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LEARN ABOUT OSX

locale::codes::langext

Locale::Codes::LangExt(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangExt(3pm)

NAME

       Locale::Codes::LangExt - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangExt;

	  $lext = code2langext('acm');		       # $lext gets 'Mesopotamian Arabic'
	  $code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langext_codes();
	  @names   = all_langext_names();

DESCRIPTION

       The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language extensions. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langext('acm','alpha');
	  $lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.

	   This is the default code set.

ROUTINES

       code2langext ( CODE [,CODESET] )
       langext2code ( NAME [,CODESET] )
       langext_code2code ( CODE ,CODESET ,CODESET2 )
       all_langext_codes ( [CODESET] )
       all_langext_names ( [CODESET] )
       Locale::Codes::LangExt::rename_langext  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangExt::add_langext  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangExt::delete_langext  ( CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangExt::delete_langext_alias  ( NAME )
       Locale::Codes::LangExt::rename_langext_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::delete_langext_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2012 Sullivan Beck

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

perl v5.16.2							    2012-10-11					       Locale::Codes::LangExt(3pm)
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