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Full Discussion: Sorting file content by file extensions
Homework and Emergencies Emergency UNIX and Linux Support Sorting file content by file extensions Post 302639583 by drl on Saturday 12th of May 2012 06:51:00 AM
Old 05-12-2012
Hi.

Good selection of techniques and problem solving.
Quote:
Originally Posted by mirni
...
Code:
ls | awk -F. '{print $NF,$0}' | sort -k1  | cut -d" " -f2-

Quote:
Originally Posted by otheus
Code:
ls -1 | sed 's/\(\.[^.]*\)$/\/\1/' | sort -t/ -k 2,2 -k 1,1  |  sed 's/\/\([^/]*\)$/\1/'

So far I like those 2 solutions the best for utilizing standard tools, at least on the data files posted so far in this thread. The msort solution is a single-command (but non-standard) solution: the ability to specify fields from the right-hand-side is invaluable in this situation.

Quote:
Originally Posted by Scrutinizer
Both rev commands also reverse the suffixes, and so they do not get sorted in alphabetical order ...
That is true, however, my impression was that the OP desired grouping rather than strict sorting. In which case the revs work except in the cases where there are no extensions. In those situations, the no-suffixed files are not in a group by themselves. The possibility of more than dot does complicate the issue, and I'm glad that it was raised.

After some thought, a better re function for my script is:
Code:
re() { perl -wn -e 'chomp;print scalar reverse,"\n";' $1 ; }

Best wishes ... cheers, drl
 

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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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