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Full Discussion: duplicate a column with awk
Top Forums Shell Programming and Scripting duplicate a column with awk Post 302590803 by LMHmedchem on Tuesday 17th of January 2012 03:43:39 PM
Old 01-17-2012
duplicate a column with awk

I have some tab delimited data and I need to duplicate the second column. It seems like I should just be able to do something simple in awk like,

Code:
awk '{ print $1, $2, $2, $3 }'

(the second field is the one that needs to be duplicated)

but I'm not sure how to print from $3 to the end of the line ($3-$NF???) and I'm not sure how the tabs will be preserved.

LMHmedchem

Last edited by radoulov; 01-17-2012 at 04:56 PM.. Reason: Use code tags, please!
 

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XmTabListInsertTabs(library call)										 XmTabListInsertTabs(library call)

NAME
XmTabListInsertTabs -- A convenience function that inserts tabs into a tab list SYNOPSIS
#include <Xm/Xm.h> XmTabList XmTabListInsertTabs( XmTabList oldlist, XmTab *tabs, Cardinal tab_count, int position); DESCRIPTION
XmTabListInsertTabs creates a new tab list that includes the tabs in oldlist. This function copies specified tabs to the tab list at the given position. The first tab_count tabs of the tabs array are added to the tab list. If oldlist is NULL, XmTabListInsertTabs creates a new tab list containing only the tabs specified. oldlist Specifies the tab list to add the tabs to. The function deallocates oldlist after extracting the required information. tabs Specifies a pointer to the tabs to be added to the tab list. It is the caller's responsibility to free the tabs in tabs by using XmTabFree. tab_count Specifies the number of tabs in tabs. position Specifies the position of the first new tab in the tab list. A value of 0 (zero) makes the first new tab the first tab in the tab list, a value of 1 makes it the second tab, and so on. If position is greater than the number of tabs in oldlist, then the tabs will be inserted at the end. If position is negative, the count will be backwards from the end. A value of -1 makes the first new tab the last tab, and so on. RETURN
If tabs is NULL or tab_count is 0 (zero), this function returns oldlist. Otherwise, it returns a new tab list. The function allocates space to hold the returned tab list. The application is responsible for managing the allocated space. The application can recover the allocated space by calling XmTabListFree. RELATED
XmTabList(3) and XmTabListFree(3). XmTabListInsertTabs(library call)
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