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Full Discussion: awk code to inspect variable before printing
Top Forums Shell Programming and Scripting awk code to inspect variable before printing Post 303017562 by SkySmart on Thursday 17th of May 2018 08:51:33 PM
Old 05-17-2018
awk code to inspect variable before printing
i have a unique scenario id like help with.

im currently running this command and it does what i want:

Code:
printf '%s\n' "${RawContent}" | awk '/##  Beginning Stages  ##/,/## Ending Stages ##/' | awk '!/^#.*\!|^#\!|DefaultError/'

Can this be shortened? I'm looking for something portable as i intend to use this across several different unix platforms.

EDIT: I'm adding the content of "RawContent":

RawContent:

Code:
##  Beginning Stages  ##

#!/bin/sh

echo "What is your name? "
read usname

echo 

echo "The date and time right now is `date`"

echo 

echo "Current directory is `pwd` "

DefaultError=none

## Ending Stages ##

The content of "RawContent" varies but my code basically does precisely what i need, which is:

Code:
1. Grabs the data that is between the two patterns of "##  Beginning Stages  ##" and "## Ending Stages ##"
2. Removes all lines that have contain specific text

The third thing i need it to do is to print absolutely nothing if the result of 1 and 2 contain the pattern "WrongValue=".

Here is how I would do it:

Code:
VarA=$(printf '%s\n' "${RawContent}" | awk '/##  Beginning Stages  ##/,/## Ending Stages ##/' | awk '!/^#.*\!|^#\!|DefaultError/')

case "${VarA}" in
*WrongValue=*)
   j=j  # do nothing
;;
*)
  printf '%s\n' "${VarA}"
;;
esac

How can I optimize this and also have the optimized version usable across all/most Unix systems?
Last edited by SkySmart; 05-19-2018 at 12:12 PM..
 

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LEARN ABOUT OSX

locale::codes::langfam

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

NAME

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

SYNOPSIS

	  use Locale::Codes::LangFam;

	  $lext = code2langfam('apa');		       # $lext gets 'Apache languages'
	  $code = langfam2code('Apache languages');    # $code gets 'apa'

	  @codes   = all_langfam_codes();
	  @names   = all_langfam_names();

DESCRIPTION

       The "Locale::Codes::LangFam" module provides access to standard codes used for identifying language families, such as those as defined in
       ISO 639-5.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default ISO 639-5
       language family codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language families. 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 = code2langfam('apa','alpha');
	  $lext = code2langfam('apa',LOCALE_LANGFAM_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from ISO 639-5 such as 'apa' for Apache languages.

	   This is the default code set.

ROUTINES

       code2langfam ( CODE [,CODESET] )
       langfam2code ( NAME [,CODESET] )
       langfam_code2code ( CODE ,CODESET ,CODESET2 )
       all_langfam_codes ( [CODESET] )
       all_langfam_names ( [CODESET] )
       Locale::Codes::LangFam::rename_langfam  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangFam::add_langfam  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangFam::delete_langfam  ( CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangFam::delete_langfam_alias  ( NAME )
       Locale::Codes::LangFam::rename_langfam_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::add_langfam_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangFam::delete_langfam_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.loc.gov/standards/iso639-5/id.php
	   ISO 639-5 .

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::LangFam(3pm)
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