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Full Discussion: Vertical sorting of columns
Top Forums UNIX for Dummies Questions & Answers Vertical sorting of columns Post 302341831 by Scott on Thursday 6th of August 2009 04:39:41 PM
Old 08-06-2009
This is certainly not a one-liner, but...

Code:
awk ' {
  for( I = 1; I <= NF; I++ )
    system( "cut -d \" \" -f " I " " FILENAME " > " $I "_tmp" )
  exit
}
' file1
paste *_tmp
rm *_tmp
 
 
Output:
a       b       c       d       e       f
1       4       7       10      13      16
2       5       8       11      14      17
3       6       9       12      15      18

 

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LEARN ABOUT CENTOS

perl::critic::policy::builtinfunctions::prohibitcomplexmappings

Perl::Critic::Policy::BuiltinFunctions::ProhibitComplexMUsernContributed Perl DoPerl::Critic::Policy::BuiltinFunctions::ProhibitComplexMappings(3)

NAME

       Perl::Critic::Policy::BuiltinFunctions::ProhibitComplexMappings - Map blocks should have a single statement.

AFFILIATION

       This Policy is part of the core Perl::Critic distribution.

DESCRIPTION

       The map function can be confusing to novices in the best of circumstances.  Mappings with multiple statements are even worse.  They're also
       a maintainer's nightmare because any added complexity decreases readability precipitously.  Why?  Because map is traditionally a one-liner
       converting one array to another.  Trying to cram lots of functionality into a one-liner is a bad idea in general.

       The best solutions to a complex mapping are: 1) write a subroutine that performs the manipulation and call that from map; 2) rewrite the
       map as a for loop.

CAVEATS

       This policy currently misses some compound statements inside of the map.  For example, the following code incorrectly does not trigger a
       violation:

	   map { do { foo(); bar() } } @list

CONFIGURATION

       By default this policy flags any mappings with more than one statement.	While we do not recommend it, you can increase this limit as
       follows in a .perlcriticrc file:

	   [BuiltinFunctions::ProhibitComplexMappings]
	   max_statements = 2

AUTHOR

       Chris Dolan <cdolan@cpan.org>

CREDITS

       Initial development of this policy was supported by a grant from the Perl Foundation.

COPYRIGHT

       Copyright (c) 2007-2011 Chris Dolan.

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

perl v5.16.3							    2014-06-09	Perl::Critic::Policy::BuiltinFunctions::ProhibitComplexMappings(3)
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