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Full Discussion: Using shell to get the last character in a line
Top Forums Shell Programming and Scripting Using shell to get the last character in a line Post 302246745 by radoulov on Tuesday 14th of October 2008 09:35:51 AM
Old 10-14-2008
Code:
sed 's/.*\(.\)$/\1/' input

[GNU and some implementations of New AWK]

Code:
awk '{print $NF}' FS= input

Code:
perl -nle'print/(.)$/' input

or

Code:
perl -lne'print chop' input

Code:
ruby -ne'puts$_[/.$/].to_s' input

Code:
while IFS= read -r; do printf "%s\n" "${REPLY#${REPLY%?}}";done<input

With recent versions of bash:

Code:
while IFS= read -r; do printf "%s\n" "${REPLY[ -1]}";done<input

With zsh:

Code:
while IFS= read -r;do print -- $REPLY[-1];done<input

If rev and process substitution are available:

Code:
cut< <(rev input) -c1

Or with GNU grep (this won't display empty lines):

Code:
grep -Eo '.$' input

Last edited by radoulov; 10-14-2008 at 03:55 PM..
 

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LEARN ABOUT DEBIAN

par::filter

PAR::Filter(3pm)					User Contributed Perl Documentation					  PAR::Filter(3pm)

NAME

       PAR::Filter - Input filter for PAR

SYNOPSIS

	   $code = 'use strict; print "Hello, World!
";';
	   $ref = PAR::Filter->new('PodStrip', 'Bleach')->apply($code);
	   print $code;    # pod-stripped and obfuscated code
	   print $$ref;    # same thing

	   $ref = PAR::Filter->new('PodStrip', 'Bleach')->apply('file.pl');
	   print $$ref;    # same thing, applied to file.pl

DESCRIPTION

       Starting with PAR 0.76, "pp -f" takes a filter name, like "Bleach", and invokes this module to transform the programs with
       PAR::Filter::Bleach.  Similarily, "pp -F Bleach" applies the Bleach filter to all included modules.

       It is possible to pass in multiple such filters, which are applied in turn.

       The output of each such filter is expected be semantically equivalent to the input, although possibly obfuscated.

       The default list of filters include:

       o   PAR::Filter::Bleach

	   The archetypical obfuscating filter.

       o   PAR::Filter::Obfuscate

	   Use B::Deobfuscate to strip away indents and comments, as well as mangling variable names.

       o   PAR::Filter::PatchContent

	   Fix PAR-incompatible modules, applied to modules by default.

       o   PAR::Filter::PodStrip

	   Strip away POD sections, applied to modules by default.

       o   PAR::Filter::Bytecode

	   Use B::Bytecode to strip away indents and comments.	This filter is deprecated! For source hiding, have a look at PAR::Filter::Crypto
	   instead and make sure to read about its caveats.

AUTHORS

       Audrey Tang <cpan@audreyt.org>

COPYRIGHT

       Copyright 2003-2009 by Audrey Tang <cpan@audreyt.org>.

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

       See <http://www.perl.com/perl/misc/Artistic.html>

perl v5.14.2							    2011-03-22							  PAR::Filter(3pm)
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