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Full Discussion: sed one Liner option -e
Top Forums Shell Programming and Scripting sed one Liner option -e Post 302942286 by TomG on Monday 27th of April 2015 06:53:58 AM
Old 04-27-2015
Quote:
Originally Posted by RudiC
That one liner actually does what it is said to do. The -es are not needed (at least in my linux mawk). Try printing the pattern space with the l command to see how it proceeds. If it finds only zero or more <NL> (\n) chars in the pattern space which is one or more empty lines, it apends the next line. If that is empty as well, repeat. If it's the last line, quit. Any other line, print the ensemble:
Code:
sed 'l; :a /^\n*$/{$d;N;l;ba}' file
foo$
foo
$
\n$
\n\nbar$


bar
baz$
baz
$
\n$
\n\n$
\n\n\n$
\n\n\n\n$


I understood the logic..its was a great debugging tip to get the content of Pattern space. That was a new learning for me . But for some reason this command was not working in HP-UX without -e

Thank you..
 

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Mojolicious::Routes::Pattern(3pm)			User Contributed Perl Documentation			 Mojolicious::Routes::Pattern(3pm)

NAME
Mojolicious::Routes::Pattern - Routes pattern engine SYNOPSIS
use Mojolicious::Routes::Pattern; # Create pattern my $pattern = Mojolicious::Routes::Pattern->new('/test/:name'); # Match routes my $result = $pattern->match('/test/sebastian'); say $result->{name}; DESCRIPTION
Mojolicious::Routes::Pattern is the core of Mojolicious::Routes. ATTRIBUTES
Mojolicious::Routes::Pattern implements the following attributes. "defaults" my $defaults = $pattern->defaults; $pattern = $pattern->defaults({foo => 'bar'}); Default parameters. "format" my $regex = $pattern->format; $pattern = $pattern->format($regex); Compiled regex for format matching. "pattern" my $pattern = $pattern->pattern; $pattern = $pattern->pattern('/(foo)/(bar)'); Raw unparsed pattern. "quote_end" my $quote = $pattern->quote_end; $pattern = $pattern->quote_end(']'); Character indicating the end of a quoted placeholder, defaults to ")". "quote_start" my $quote = $pattern->quote_start; $pattern = $pattern->quote_start('['); Character indicating the start of a quoted placeholder, defaults to "(". "regex" my $regex = $pattern->regex; $pattern = $pattern->regex($regex); Pattern in compiled regex form. "relaxed_start" my $relaxed = $pattern->relaxed_start; $pattern = $pattern->relaxed_start('*'); Character indicating a relaxed placeholder, defaults to "#". "reqs" my $reqs = $pattern->reqs; $pattern = $pattern->reqs({foo => qr/w+/}); Regex constraints. "symbol_start" my $symbol = $pattern->symbol_start; $pattern = $pattern->symbol_start(':'); Character indicating a placeholder, defaults to ":". "symbols" my $symbols = $pattern->symbols; $pattern = $pattern->symbols(['foo', 'bar']); Placeholder names. "tree" my $tree = $pattern->tree; $pattern = $pattern->tree([ ... ]); Pattern in parsed form. "wildcard_start" my $wildcard = $pattern->wildcard_start; $pattern = $pattern->wildcard_start('*'); Character indicating the start of a wildcard placeholder, defaults to "*". METHODS
Mojolicious::Routes::Pattern inherits all methods from Mojo::Base and implements the following ones. "new" my $pattern = Mojolicious::Routes::Pattern->new('/:action'); my $pattern = Mojolicious::Routes::Pattern->new('/:action', action => qr/w+/); my $pattern = Mojolicious::Routes::Pattern->new(format => 0); Construct a new pattern object. "match" my $result = $pattern->match('/foo/bar'); my $result = $pattern->match('/foo/bar', 1); Match pattern against entire path, format detection is disabled by default. "parse" $pattern = $pattern->parse('/:action'); $pattern = $pattern->parse('/:action', action => qr/w+/); $pattern = $pattern->parse(format => 0); Parse a raw pattern. "render" my $path = $pattern->render({action => 'foo'}); my $path = $pattern->render({action => 'foo'}, 1); Render pattern into a path with parameters, format rendering is disabled by default. "shape_match" my $result = $pattern->shape_match($path); my $result = $pattern->shape_match($path, 1); Match pattern against path and remove matching parts, format detection is disabled by default. SEE ALSO
Mojolicious, Mojolicious::Guides, <http://mojolicio.us>. perl v5.14.2 2012-09-05 Mojolicious::Routes::Pattern(3pm)
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