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Top Forums Shell Programming and Scripting Pattern Match and Rearrange the Fields in UNIX Post 302958699 by Don Cragun on Sunday 25th of October 2015 03:30:59 PM
Old 10-25-2015
Quote:
Originally Posted by looney
Hi Zaxxon,
in code
Code:
awk '{sub(/>/,"",$NF); print $1,$5,$3,$4,$2">"}' infile
<Subject D="010101010101" B="1039502" C="2015-06-30" A="I">

please explain the highlighted..
Thanks,
The awk command sub(/>/, "", $NF) changes (or substitutes) the string matching the extended regular expression > (which matches a literal greater than sign) to an empty string (specified by ""), in the last field (specified by $NF) on the line. Or, simply stated, it removes the trailing greater than sign from the end of that input line.
 

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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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