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Full Discussion: Read a tab delimited
Top Forums UNIX for Dummies Questions & Answers Read a tab delimited Post 302247985 by podzach on Thursday 16th of October 2008 08:50:30 PM
Old 10-16-2008
Read a tab delimited

OK, let's set this up. I have a tab delimited file from excel. In my UNIX shell I have the following lines
Code:
   IFS=`printf "\t"`
   while read LINE_NO SKIP IGNORE_ERRORS OTHER
   do
 ....

This works fine if there is something in every column like this. NOTE, those are tabs, not spaces. Smilie
Code:
17      SKIP    FALSE   Endofline

LINE_NO=17
SKIP=SKIP
IGNORE_ERRORS=FALSE
OTHER=Endofline


The problem comes about if one of the columns is a null like this.
Code:
17                FALSE   Endofline

LINE_NO=17
SKIP=FALSE
IGNORE_ERRORS=Endofline
OTHER=

How do I get unix to see that double tab? I am on an AIX box running a ksh shell.

Thanks for your time
 

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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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