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Full Discussion: Sed position specific replace
Top Forums Shell Programming and Scripting Sed position specific replace Post 302484337 by tiggyboo on Thursday 30th of December 2010 03:39:50 PM
Old 12-30-2010
Sed position specific replace
I'm drawing a blank on how to use sed to replace selectively based on position in the string (vs nth occurence):

hello.|there.|how.|are.|you.|

I want the period removed in the 3rd item (as defined by the pipe delimiter) if a period is present. So the result in this case would be:

hello.|there.|how|are.you.|

I have a feeling the solution might be embarrassing, but don't let that be a deturrent :-)

Thanks in advance,
Al
 

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LEARN ABOUT REDHAT

xmlistreplaceitemsposunselected

XmListReplaceItemsPosUnselected(library call)							     XmListReplaceItemsPosUnselected(library call)

NAME

       XmListReplaceItemsPosUnselected -- A List function that replaces items in a list without selecting the replacement items

SYNOPSIS

       #include <Xm/List.h>
       void XmListReplaceItemsPosUnselected(
       Widget widget,
       XmString *new_items,
       int item_count,
       int position);

DESCRIPTION

       XmListReplaceItemsPosUnselected	replaces  the  specified  number  of items in the list with new items, starting at the given position. The
       replacement items remain unselected, even if they currently appear in the XmNselectedItems list.

       widget	 Specifies the ID of the List widget to replace items in.

       new_items Specifies a pointer to the replacement items.

       item_count
		 Specifies the number of elements in new_items and the number of items in the list to replace.	This number must be nonnegative.

       position  Specifies the position of the first item in the list to be replaced. A value of 1 indicates that the first item replaced  is  the
		 first item in the list; a value of 2 indicates that it is the second item; and so on.

		 Beginning  with  the  item  specified in position, item_count items in the list are replaced with the corresponding elements from
		 new_items. That is, the item at position is replaced with the first element of new_items; the item  after  position  is  replaced
		 with the second element of new_items; and so on, until item_count is reached.

       For a complete definition of List and its associated resources, see XmList(3).

RELATED

       XmList(3).

												     XmListReplaceItemsPosUnselected(library call)
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