Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Perl Regex string opperation
Top Forums Shell Programming and Scripting Perl Regex string opperation Post 302327154 by bwhitehd on Friday 19th of June 2009 08:29:23 PM
Old 06-19-2009
The s/// operator is for substitution. You are telling it to replace '\d+$' with ''. Since you're trying to match the numbers and keep just them, you need to remove everything else and carry the numbers forward. Also, you need to use chomp() to remove the newline from each line.

Here is the modified code to make this work. I added an else statement at the end just to show it gives the correct result.

Code:
for ( my $index = 0 ; $index < scalar(@lengths) ; $index++ ) {
    chomp( my $length = $lengths[$index] );
    $length =~ s/^.*: (\d+)$/$1/;
    chomp( my $size = $sizes[$index] );
    $size =~ s/^.* (\d+)$/$1/;
    if ( $length != $size ) {
        print "$length doesn't equal $size\n";
    }
    else {
        print "$length are equal $size\n";
    }
}

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Perl REGEX

Hi, Can anyone help me to find regular expression for the following in Perl? "The string can only contain lower case letters (a-z) and no more than one of any letter." For example: "table" is accepted, whether "dude" is not. I have coded like this: $str = "table"; if ($str =~ m/\b()\b/) {... (4 Replies)
Discussion started by: evilfreakz
4 Replies

2. Shell Programming and Scripting

Perl REGEX - How do extract a string in a line?

Hi Guys, In the following line: cn=portal.090710.191533.428571000,cn=groups,dc=mp,dc=rj,dc=gov,dc=br I need to extract this string: portal.090710.191533.428571000 As you can see this string always will be bettween "cn=" and "," strings. Someone know one regular expression to... (4 Replies)
Discussion started by: maverick-ski
4 Replies

3. Shell Programming and Scripting

filtering out duplicate substrings, regex string from a string

My input contains a single word lines. From each line data.txt prjtestBlaBlatestBlaBla prjthisBlaBlathisBlaBla prjthatBlaBladpthatBlaBla prjgoodBlaBladpgoodBlaBla prjgood1BlaBla123dpgood1BlaBla123 Desired output --> data_out.txt prjtestBlaBla prjthisBlaBla... (8 Replies)
Discussion started by: kchinnam
8 Replies

4. Shell Programming and Scripting

Converting perl regex to sed regex

I am having trouble parsing rpm filenames in a shell script.. I found a snippet of perl code that will perform the task but I really don't have time to rewrite the entire script in perl. I cannot for the life of me convert this code into something sed-friendly: if ($rpm =~ /(*)-(*)-(*)\.(.*)/)... (1 Reply)
Discussion started by: suntzu
1 Replies

5. Shell Programming and Scripting

Perl: Regex, string matching

Hi, I've a logfile which i need to parse and get the logs depending upon the user input. here, i'm providing an option to enter the string which can be matched with the log entries. e.g. one of the logfile entry reads like this - $str = " mpgw(BLUESOAPFramework):... (6 Replies)
Discussion started by: butterfly20
6 Replies

6. Shell Programming and Scripting

perl regex string match issue..kindly help

i have a script in which i need to skip comments, and i am able to achieve it partially... IN text file: {**************************** {test : test...test } Script: while (<$fh>) { push ( @data, $_); } if ( $data =~ m/(^{\*+$)/ ){ } With the above match i am... (5 Replies)
Discussion started by: avskrm
5 Replies

7. Programming

Perl regex

HI, I'm new to perl and need simple regex for reading a file using my perl script. The text file reads as - filename=/pot/uio/current/myremificates.txt certificates=/pot/uio/current/userdir/conf/user/gamma/settings/security/... (3 Replies)
Discussion started by: jhamaks
3 Replies

8. Programming

Perl regex

Hello folks, Looking for a quick help on regex in my perl script. here's the string i want to parse and get the 2nd field out of it. $str = " 2013-08-07 12:29 Beta ACTIVE"; I want to extract 'Beta' out of this string. This string will keep on changing... (2 Replies)
Discussion started by: jhamaks
2 Replies

9. Shell Programming and Scripting

Perl, RegEx - Help me to understand the regex!

I am not a big expert in regex and have just little understanding of that language. Could you help me to understand the regular Perl expression: ^(?!if\b|else\b|while\b|)(?:+?\s+){1,6}(+\s*)\(*\) *?(?:^*;?+){0,10}\{ ------ This is regex to select functions from a C/C++ source and defined in... (2 Replies)
Discussion started by: alex_5161
2 Replies

10. UNIX for Beginners Questions & Answers

Help with understanding this regex in a Perl script parsing a 'complex' string

Hi, I need some guidance with understanding this Perl script below. I am not the author of the script and the author has not leave any documentation. I supposed it is meant to be 'easy' if you're a Perl or regex guru. I am having problem understanding what regex to use :confused: The script does... (3 Replies)
Discussion started by: newbie_01
3 Replies

LEARN ABOUT DEBIAN

graphics::primitive::insets

Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME

       Graphics::Primitive::Insets - Space between things

DESCRIPTION

       Graphics::Primitive::Insets represents the amount of space that surrounds something.  This object can be used to represent either padding
       or margins (in the CSS sense, one being inside the bounding box, the other being outside)

SYNOPSIS

	 use Graphics::Primitive::Insets;

	 my $insets = Graphics::Primitive::Insets->new({
	   top	   => 5,
	   bottom  => 5,
	   left    => 5,
	   right   => 5
	 });

METHODS

   Constructor
       new Creates a new Graphics::Primitive::Insets.

   Instance Methods
       as_array
	   Return these insets as an array in the form of top, right, bottom and left.

       bottom
	   Set/Get the inset from the bottom.

       equal_to
	   Determine if these Insets are equal to another.

       left
	   Set/Get the inset from the left.

       right
	   Set/Get the inset from the right.

       top Set/Get the inset from the top.

       zero
	   Sets all the insets (top, left, bottom, right) to 0.

AUTHOR

       Cory Watson, "<gphat@cpan.org>"

SEE ALSO

       perl(1)

COPYRIGHT &; LICENSE
       Copyright 2008-2010 by Cory G Watson.

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

perl v5.12.3							    2010-08-21					  Graphics::Primitive::Insets(3pm)
All times are GMT -4. The time now is 06:49 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy