The UNIX and Linux Forums  

Go Back   The UNIX and Linux Forums > Top Forums > UNIX for Dummies Questions & Answers
Google UNIX.COM


UNIX for Dummies Questions & Answers If you're not sure where to post a UNIX or Linux question, post it here. All UNIX and Linux newbies welcome !!

More UNIX and Linux Forum Topics You Might Find Helpful
Thread Thread Starter Forum Replies Last Post
using uniq and awk?? amatuer_lee_3 Shell Programming and Scripting 13 05-17-2008 10:10 AM
How to uniq third field in a file babycakes UNIX for Dummies Questions & Answers 1 02-01-2008 12:52 AM
help on UniQ vishal_ranjan HP-UX 0 06-21-2007 07:33 AM
Moving Part of a field to another field using AWK rjsha1 Shell Programming and Scripting 5 08-04-2006 02:39 AM
sort/uniq jimmyflip UNIX for Dummies Questions & Answers 3 10-17-2002 02:09 AM

Reply
 
Submit Tools LinkBack Thread Tools Search this Thread Display Modes
  #8  
Old 01-16-2008
Tytalus's Avatar
Registered User
 

Join Date: Jun 2003
Location: Scotland
Posts: 290
Quote:
Originally Posted by smallu View Post
Tytalus

Can you pls explain how it works..whats $1 and $0 and how does it work..Thanks a bunch!
Sure.

$1 is the first field. $0 is the entire record. So...

Basic jist is that you run through each record, and add it to an array (using the first field as a reference) IF the length of the record is greater than the current array entry:

Code:
if ( length($0) > length(a[$1]) ){a[$1]=$0}}
Then you just loop through and print out the contents of the array:

Code:
{for (i in a){print a[i]}}'
HTH
Reply With Quote
Forum Sponsor
  #9  
Old 01-16-2008
Registered User
 

Join Date: Sep 2006
Posts: 1,580
Code:
# sort -k1,1 -u file
1xr1 1xws 1yxt 1yxu 1yxv 1yxx 2o3p 2o63 2o64 2o65
1y8y 2c68 2c69 2c6i 2c6k 2c6m 2c6o
1zlt 2br1 2brb 2brn 2bro 2cgu 2cgv 2cgx
Reply With Quote
Google The UNIX and Linux Forums
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes




All times are GMT -7. The time now is 11:34 PM.


Powered by: vBulletin, Copyright ©2000 - 2006, Jelsoft Enterprises Limited.
The UNIX and Linux Forums Content Copyright ©1993-2008. All Rights Reserved.Ad Management by RedTyger Visit The Complex Event Processing Blog

Content Relevant URLs by vBSEO 3.2.0