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Full Discussion: Datestamp format 2nd change in csv file (awk or sed)
Top Forums Shell Programming and Scripting Datestamp format 2nd change in csv file (awk or sed) Post 302916883 by Akshay Hegde on Friday 12th of September 2014 11:16:14 AM
Old 09-12-2014
Code:
akshay@nio:/tmp$ cat file.csv
2014-08-21 18:06:26,A,B,12345,123,C,1232,26/08/14 18:07

Code:
akshay@nio:/tmp$ cat date_format.awk
function fmt(v,reverse){

	split(v,dt,"[-/ :]")	
	str=dt[1]" "dt[2]" "dt[3]" "dt[4]" "dt[5]" "dt[6]
	
	if(reverse)
	{
		dt[3] += (dt[3] >=0 && dt[3] <=69) ? 2000 : (dt[3]>=70 && dt[3] <= 99) ? 1900 : 0

		str = dt[3]" "dt[2]" "dt[1]" "dt[4]" "dt[5]" " ( length(dt[6])?dt[6]:0 )
	}

	return strftime("%d/%m/%Y %H:%m",mktime(str))
}
{
	$1 = fmt($1) 
	$8 = fmt($8,1)
}1

Resulting
Code:
akshay@nio:/tmp$ awk -vFS="," -f date_format.awk file.csv
21/08/2014 18:08 A B 12345 123 C 1232 26/08/2014 18:08

This User Gave Thanks to Akshay Hegde For This Post:
say170
 

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LEARN ABOUT MOJAVE

locale::codes::langext5.18

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) 2011-2013 Sullivan Beck

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

perl v5.18.2							    2013-11-04					       Locale::Codes::LangExt(3pm)
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