i'm halfway into my script and realize i may need to use an associative array (a hash, i guess they are called in Perl). i'm fairly new to Perl and don't know how to use them correctly.
i have some files in a directory. each file contains a number in a specific place in it's header. what i would... (4 Replies)
Hello,
I have a page where multiple fields and their values are displayed. But I am able to sort only a few fields. When I looked into the issue, it is seen that the for each row of info , an unique id is generated and id.txt is generated and saved. Only those fields which are inside that id.txt... (3 Replies)
I have an array full of string values that need to be sorted, but if a value starts with (regex) 0^ it should be at the beginning of the array. Otherwise the array should be sorted normally using ascii sort.
Please help me create the sub to pass to the sort function. (7 Replies)
Hi All,
I have an array in perl as @match = (201001,201002,201001,201002);
I am trying to sort this array as
@match = sort(@match);
print "@match";
I dont see the output sorted any answers
I also tried another way, but still the results are not sorted
foreach my $match (sort { $a... (2 Replies)
Hi,
I have a file in this format:
a b c d e
a b c d e
a b c d e
i need perl script to sort 2nd column in alphabatical order
The script i use is
#!/usr/bin/perl
my @words=<>;
foreach(sort mysort @words) {
print; (4 Replies)
Good morning!!
Im trying to practice withe Perl and sorting variables is not going good at all!
#!/usr/bin/perl
$username = $ENV {'LOGNAME'};
print "Hello, $username\n";
I want to add sort and 'mail' and 'home'. This below is what I have came up with,but of course its not working.
... (5 Replies)
I have a file abc.txt which contains data in th following format
abc,23
hgfh,87
tweg,89
jdfjn,74
I want to sort on the basis of column (the second one). It should be numerical sort.
output should be
abc,23
jdfjn,74
hgfh,87
tweg,89
I know how to do it in unix. I need a PERL code (1 Reply)
Hi all,
Not sure if this should be in the programming forum, but I believe it will get more response under the Shell Programming and Scripting FORUM.
Am trying to write a customized df script in Perl and need some help with regards to using arrays and file handlers.
At the moment am... (3 Replies)
I have a directory of backup files.
named like this:
ldap.data.04-06-2012.tar
ldap.data.03-06-2012.tar
ldap.data.02-06-2012.tar
ldap.data.01-06-2012.tar
ldap.data.31-05-2012.tar
ldap.data.30-05-2012.tar
ldap.data.29-05-2012.tar
ldap.data.28-05-2012.tar
ldap.data.27-05-2012.tar... (6 Replies)
Hey guys,
I have started to learn perl recently because of a position I took. They want me to master perl and I've been reading books and practicing myself.
Basically I,m having my perl script run through a text pad and give the output in a special way
e.g
input
deviceconfig {
... (5 Replies)
Discussion started by: zee3b
5 Replies
LEARN ABOUT DEBIAN
regexp::reggrp
Regexp::RegGrp(3pm) User Contributed Perl Documentation Regexp::RegGrp(3pm)NAME
Regexp::RegGrp - Groups a regular expressions collection
VERSION
Version 1.002
DESCRIPTION
Groups regular expressions to one regular expression
SYNOPSIS
use Regexp::RegGrp;
my $reggrp = Regexp::RegGrp->new(
{
reggrp => [
{
regexp => '%name%',
replacement => 'John Doe',
modifier => $modifier
},
{
regexp => '%company%',
replacement => 'ACME',
modifier => $modifier
}
],
restore_pattern => $restore_pattern
}
);
$reggrp->exec( $scalar );
To return a scalar without changing the input simply use (e.g. example 2):
my $ret = $reggrp->exec( $scalar );
The first argument must be a hashref. The keys are:
reggrp (required)
Arrayref of hashrefs. The keys of each hashref are:
regexp (required)
A regular expression
replacement (optional)
Scalar or sub.
A replacement for the regular expression match. If not set, nothing will be replaced except "store" is set. In this case the
match is replaced by something like sprintf("x01%dx01", $idx) where $idx is the index of the stored element in the store_data
arrayref. If "store" is set the default is:
sub {
return sprintf( "x01%dx01", $_[0]->{store_index} );
}
If a custom restore_pattern is passed to to constructor you MUST also define a replacement. Otherwise it is undefined.
If you define a subroutine as replacement an hashref is passed to this subroutine. This hashref has four keys:
match Scalar. The match of the regular expression.
submatches Arrayref of submatches.
store_index The next index. You need this if you want to create a placeholder and store the replacement in the
$self->{store_data} arrayref.
opts Hashref of custom options.
modifier (optional)
Scalar. The default is 'sm'.
store (optional)
Scalar or sub. If you define a subroutine an hashref is passed to this subroutine. This hashref has three keys:
match Scalar. The match of the regular expression.
submatches Arrayref of submatches.
opts Hashref of custom options.
A replacement for the regular expression match. It will not replace the match directly. The replacement will be stored in the
$self->{store_data} arrayref. The placeholders in the text can easily be rereplaced with the restore_stored method later.
restore_pattern (optional)
Scalar or Regexp object. The default restore pattern is
qr~x01(d+)x01~
This means, if you use the restore_stored method it is looking for x010x01, x011x01, ... and replaces the matches with
$self->{store_data}->[0], $self->{store_data}->[1], ...
EXAMPLES
Example 1
Common usage.
#!/usr/bin/perl
use strict;
use warnings;
use Regexp::RegGrp;
my $reggrp = Regexp::RegGrp->new(
{
reggrp => [
{
regexp => '%name%',
replacement => 'John Doe'
},
{
regexp => '%company%',
replacement => 'ACME'
}
]
}
);
open( INFILE, 'unprocessed.txt' );
open( OUTFILE, '>processed.txt' );
my $txt = join( '', <INFILE> );
$reggrp->exec( $txt );
print OUTFILE $txt;
close(INFILE);
close(OUTFILE);
Example 2
A scalar is requested by the context. The input will remain unchanged.
#!/usr/bin/perl
use strict;
use warnings;
use Regexp::RegGrp;
my $reggrp = Regexp::RegGrp->new(
{
reggrp => [
{
regexp => '%name%',
replacement => 'John Doe'
},
{
regexp => '%company%',
replacement => 'ACME'
}
]
}
);
open( INFILE, 'unprocessed.txt' );
open( OUTFILE, '>processed.txt' );
my $unprocessed = join( '', <INFILE> );
my $processed = $reggrp->exec( $unprocessed );
print OUTFILE $processed;
close(INFILE);
close(OUTFILE);
AUTHOR
Merten Falk, "<nevesenin at cpan.org>"
BUGS
Please report any bugs or feature requests through the web interface at http://github.com/nevesenin/regexp-reggrp-perl/issues
<http://github.com/nevesenin/regexp-reggrp-perl/issues>.
SUPPORT
You can find documentation for this module with the perldoc command.
perldoc Regexp::RegGrp
COPYRIGHT & LICENSE
Copyright 2010, 2011 Merten Falk, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.14.2 2012-02-18 Regexp::RegGrp(3pm)