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Top Forums UNIX for Dummies Questions & Answers cut and paste columns using awk Post 302314543 by cosmologist on Friday 8th of May 2009 03:36:01 PM
Old 05-08-2009
Quote:
Originally Posted by TonyFullerMalv
For example:

Code:
$ awk '{ print $1" "$3" "$4" "$2 }' table.txt > outputfile.txt

Would move column 2 to the last column.
Quote:
Originally Posted by jim mcnamara
Code:
awk '{for (i=NF; i>0; i--) { printf("%s ", $i}; print "" }' mycolumnarfile > newfile

reverses columns example: 4 .. 3 .. 2 .. 1
Thanks for replying, but when I do that I see the results in Unix, how can I do that in my original table.txt file?
 

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AnyData::Format::Tab(3pm)				User Contributed Perl Documentation				 AnyData::Format::Tab(3pm)

NAME
AnyData::Format::Tab - tiedhash & DBI/SQL access to Tab delimited files SYNOPSIS
use AnyData; my $table = adHash( 'Tab', $filename,'r',$flags ); while (my $row = each %$table) { print $row->{name}," " if $row->{country} =~ /us|mx|ca/; } # ... other tied hash operations OR use DBI my $dbh = DBI->connect('dbi:AnyData:'); $dbh->func('table1','Tab', $filename,$flags,'ad_catalog'); my $hits = $dbh->selectall_arrayref( qq{ SELECT name FROM table1 WHERE country = 'us' }); # ... other DBI/SQL operations DESCRIPTION
This is a plug-in format parser for the AnyData and DBD::AnyData modules. It will read column names from the first row of the file, or accept names passed by the user. In addition to column names, the user may set other options as follows: col_names : a tab separated list of column names eol : the end of record mark, by default quote_char : the character used to quote fields " by default escape_char : the character used to escape the quote char, " by default If you are using this with DBD::AnyData, put ad_ in front of the flags, e.g. ad_eol. Please refer to the documentation for AnyData.pm and DBD::AnyData.pm for further details. AUTHOR &; COPYRIGHT copyright 2000, Jeff Zucker <jeff@vpservices.com> all rights reserved perl v5.10.1 2004-08-17 AnyData::Format::Tab(3pm)
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