Perl - sort and count

Posted on 2012-03-20
Last Modified: 2012-03-20
I have a file that has some info for user records, each record is separated by a new line such as:

dn: John Doe
alias: JDoe
contacts: 20101118
contacts: Visable

dn: Mary Doe
alias: MDoe
contacts: 20101118
contacts: Visable
contacts: 20101119
contacts: Hidden

dn: Bill Doe
alias: BDoe
contacts: 20101119
contacts: Hidden

I can pull the records out I want using - Perl -n00e ......

What I need to do is pull out the records that has more than two contacts: lines in them.

How can I pull each record out and do a count of how many lines they have in them that contain "contacts:"....

In the example above I need to be able to pull out the record for:

dn: Mary Doe
alias: MDoe
contacts: 20101118
contacts: Visable
contacts: 20101119
contacts: Hidden

but would like to get a count on all records on the number of contacts: lines in each one.

Question by:bt707
LVL 31

Accepted Solution

farzanj earned 500 total points
ID: 37744323
Try this:

 perl -ne 'BEGIN{$/="\n\n";} (@c) = /(contacts[:])/g; print if (@c>2)' xx' filename

Open in new window

If you also want to print the count of contacts, do this:
perl -ne 'BEGIN{$/="\n\n";} (@c) = /(contacts[:])/g; if (@c>2){print;print @c."\n"}' filename

Open in new window


Author Closing Comment

ID: 37744366
Yes that worked well.


Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Many time we need to work with multiple files all together. If its windows system then we can use some GUI based editor to accomplish our task. But what if you are on putty or have only CLI(Command Line Interface) as an option to  edit your files. I…
A year or so back I was asked to have a play with MongoDB; within half an hour I had downloaded (,  installed and started the daemon, and had a console window open. After an hour or two of playing at the command …
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
This is a video that shows how the OnPage alerts system integrates into ConnectWise, how a trigger is set, how a page is sent via the trigger, and how the SENT, DELIVERED, READ & REPLIED receipts get entered into the internal tab of the ConnectWise …

943 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

5 Experts available now in Live!

Get 1:1 Help Now