Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Repeating groups problem
Top Forums Shell Programming and Scripting Repeating groups problem Post 302253909 by joncoop on Monday 3rd of November 2008 04:42:57 AM
Old 11-03-2008
Repeating groups problem
Hi

I am trying to locate all strings seperated by the string -CR-, the string will have an unknown number of these -CR- strings, I've used the regex:

^(?:(.*?)-CR-)+$


As shown in the test code:

my ($myString)="This is the first line-CR-second line-CR-third line-CR-fourth line-CR-fifth line-CR-";
if ($myString =~ /^(?:(.*?)-CR-)+$/)
{
print "String1 $1 String2 $2 String3 $3 String4 $4 String5 $5\n";
}

However I only ever get the last line "fifth line" which goes to $1, it would seem that only $1 is ever set, and keeps getting overwritten. for example if I replace:

if ($myString =~ /^(?:(.*?)-CR-)+$/)


with:

if ($myString =~ /^(?:(.*?)-CR-){7,}$/)

As I expected I get no output as there only five repeats possible. If I change the 7 to number 5 or less than I again get the same last line found in $1, anyone got any ideas?

Thanks

Jon
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Omit repeating lines

Can someone help me with the following 2 objectives? 1) The following command is just an example. It gets a list of all print jobs. From there I am trying to extract the printer name. It works with the following command: lpstat -W "completed" -o | awk -F- '{ print $1}' Problem is, I want... (6 Replies)
Discussion started by: TheCrunge
6 Replies

2. Shell Programming and Scripting

Repeating commands in a script

I have written a script that I want to be repeated. The script that I wrote outputs the date, how many people are on the system, how many people logged in before me, and how many people logged in after me. Than what I want it to do is after it outputs the 4 lines I want it to go back to the... (4 Replies)
Discussion started by: Dave2874
4 Replies

3. Shell Programming and Scripting

Value repeating problem in columns

Hi, I have a file like this 0817 0201364 1 866 . . . . . . . 574 . 100.0 100.0 5529737 1 TV 0817 0201364 2 1440 . . . . . . . . . . . 5529737 1 TV 0817 0201364 6 1323 . . . . ... (2 Replies)
Discussion started by: Sandeep_Malik
2 Replies

4. Shell Programming and Scripting

Repeating awk command

Hi all, I have an awk command that needs to be ran multiple times in a script on one file containing lots of fields of data. The file look like this (the numbers are made up): 1234 2222 2223 2222 123 2223 3333 2323 3333 3321 3344 4444 The... (2 Replies)
Discussion started by: nistleloy
2 Replies

5. Shell Programming and Scripting

Problem with Sed when repeating characters

Hi all, I'm learning sed (and regular expressions) - My first little program is to replace 3 numbers in a row with 'XXX' This is what I am trying: echo '511' | sed 's/{3}/XXX/' Here is the output: defunct-macbook-pro:~ defunct$ echo '511' | sed 's/{3}/XXX/' 511For some reason, it doesnt... (2 Replies)
Discussion started by: Defunct
2 Replies

6. Shell Programming and Scripting

Repeating Substitution Command on VI

Hello Folks, how to write a command on vi that allow to repeat last substitution command? Here what I want to do : 1 2 3 1 2 3 1 2 3 :.,+2s/\n/ /And I obtain : 1 2 3 1 2 3 1 (5 Replies)
Discussion started by: gogol_bordello
5 Replies

7. Shell Programming and Scripting

Repeating loop between dates

Hi , I need to execute set of commands between two parameterized dates. Suppose, If parameter1 is Feb1st-2010 and parameter2 is November15th-2010. I need to execute a set of commands within these dates . can any one help me to build a loop so that it should execute for 28days in February... (4 Replies)
Discussion started by: Raamc
4 Replies

8. UNIX for Dummies Questions & Answers

Remove groups of repeating lines

I know uniq exists, but am not sure how to remove repeating lines when they are groups of two different lines repeating themselves, without using sort. I need them to be sorted in the original order, just to remove repeats. cd /media/AUDIO/WAVE/9780743518673/mp3 ~/Desktop/mp3-to-m4b... (1 Reply)
Discussion started by: glev2005
1 Replies

9. UNIX for Advanced & Expert Users

prtdiag -v problem :Memory Module Groups status not Showing

Hi Friends, I need a help from you all. In my machine which is on Solaris 9. the command prtdiag -v shows the complete output but it doesn't show "Memory Module Groups status" status. I have tried restarting the picl daemon, but still it doesn't work. Memory Module Groups:... (2 Replies)
Discussion started by: vivek.goel.piet
2 Replies

10. Homework & Coursework Questions

repeating test several times

echo "Enter Number of times u want this to be run" read RUN for i in {1..$RUN} do echo "i am going to market" done now the issue is that when i run this script it ask me "Enter Number of times u want this to be run" and then i put the value ,say i put 10, but when the script runs it gives... (1 Reply)
Discussion started by: bharat8007
1 Replies

LEARN ABOUT PHP

line

line(1)                                                            User Commands                                                           line(1)

NAME

       line - read one line

SYNOPSIS

       line

DESCRIPTION

       The  line utility copies one line (up to and including a new-line) from the standard input and writes it on the standard output. It returns
       an exit status of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal.

EXIT STATUS

       Exit status is:

       0        Successful completion

       >0       End-of-file on input.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       sh(1), read(2), attributes(5)

SunOS 5.10                                                          1 Feb 1995                                                             line(1)
All times are GMT -4. The time now is 03:16 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy