Did you know LQ has a Linux Hardware Compatibility List?
Go Back > Forums > Non-*NIX Forums > Programming
User Name
Programming This forum is for all programming questions.
The question does not have to be directly related to Linux and any language is fair game.


  Search this Thread
Old 09-04-2008, 05:10 PM   #1
Senior Member
Registered: Feb 2004
Location: Middle of nowhere
Distribution: Debian Squeeze
Posts: 1,249

Rep: Reputation: 48
Swap column of text file

I have a file with following data (tab/space separated columns):
1 865249
2 134470
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 0
12 0
13 0
14 0
15 0
16 1
17 0
18 0
19 0
20 280
I would like to swap the two columns. I know it is got to be something very simple but can't seem to figure out.

Old 09-04-2008, 05:43 PM   #2
Registered: Jul 2003
Location: London, UK
Distribution: FreeBSD, OpenSuse, Ubuntu, RHEL
Posts: 417

Rep: Reputation: 33
awk '{print$2, $1}' file
Old 09-04-2008, 05:47 PM   #3
LQ Veteran
Registered: Nov 2005
Location: Annapolis, MD
Distribution: Arch/XFCE
Posts: 17,802

Rep: Reputation: 735Reputation: 735Reputation: 735Reputation: 735Reputation: 735Reputation: 735Reputation: 735
awk -F" " '{print $2, $1}' filename > newfilename

(assumes that the column separator is a space)

Edit--beaten to the punch again....
Old 09-04-2008, 09:38 PM   #4
Senior Member
Registered: Aug 2006
Posts: 2,697
Blog Entries: 5

Rep: Reputation: 243Reputation: 243Reputation: 243
while read -r a b
 echo "$b $a"
done < file
Old 09-05-2008, 12:30 PM   #5
Senior Member
Registered: Feb 2004
Location: Middle of nowhere
Distribution: Debian Squeeze
Posts: 1,249

Original Poster
Rep: Reputation: 48

Thank you guys....Almost all the sample codes worked...


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Import fixed-width column text document in Calc Marel Linux - Desktop 3 05-05-2008 04:23 PM
How to parse text file to a set text column width and output to new text file? jsstevenson Programming 12 04-23-2008 03:36 PM
Combine multiple one column text file into one text file with multiple colum khairilthegreat Linux - Newbie 7 11-23-2007 02:31 PM
ripping a column from a text file dominant Linux - Newbie 1 01-31-2006 05:15 AM
loading from text file using column width spyghost Programming 5 11-03-2003 02:34 PM

All times are GMT -5. The time now is 09:25 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration