Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Replace n Occurrence using Awk

Posted on 2013-05-09
1
Medium Priority
?
313 Views
Last Modified: 2013-05-09
Input: peter peter tom
Output: peter chris tom

-----------------------

I'd like to replace the 2nd occurrence of a string using awk.

-----------------------

I know this can easily be done with sed, but I'm trying to learn awk.

-----------------------

I tried this, but it's not working:

echo peter peter tom | awk '{ c++; if(c==2) { sub( "peter", "chris" ); c=0; print } }'

Open in new window


-----------------------

Any help is appreciated.
0
Comment
Question by:Neapolitan23
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 57

Accepted Solution

by:
Bill Prew earned 2000 total points
ID: 39154163
Try this:

{ c = 0; for (i = 0; ++i <= NF;) { if( $i == "peter" ) { c++; if( c == 2 ) { $i = "chris" } } }; print $0 }

Open in new window

~bp
0

Featured Post

How Blockchain Is Impacting Every Industry

Blockchain expert Alex Tapscott talks to Acronis VP Frank Jablonski about this revolutionary technology and how it's making inroads into other industries and facets of everyday life.

Question has a verified solution.

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

The Windows functions GetTickCount and timeGetTime retrieve the number of milliseconds since the system was started. However, the value is stored in a DWORD, which means that it wraps around to zero every 49.7 days. This article shows how to solve t…
In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
The viewer will learn how to create a basic form using some HTML5 and PHP for later processing. Set up your basic HTML file. Open your form tag and set the method and action attributes.: (CODE) Set up your first few inputs one for the name and …

660 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