03-29-2008
That's a somewhat idiosyncratic script, I'm not sure which parts are suitable for a person of your age.
(2, 3, 6) is a list. Map takes the function you give it and applies it to each item on the list in turn, and returns the result as a new list. Within map, $_ refers to the current item. So the map returns $F[2] followed by $F[3] followed by $F[6]. The rest is just formatting.
Oh, the final crucial point is the option -a (mnemonic: more like awk) which says to split the input into @F and, -F "\t" which says to do that splitting on the tab character.
Last edited by era; 03-29-2008 at 02:19 PM..
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LEARN ABOUT OSF1
xmlistreplaceitemspos
XmListReplaceItemsPos(3X) XmListReplaceItemsPos(3X)
NAME
XmListReplaceItemsPos - A List function that replaces the specified elements in the list
SYNOPSIS
#include <Xm/List.h>
void XmListReplaceItemsPos (widget, new_items, item_count, position)
Widget widget;
XmString *new_items;
int item_count;
int position;
DESCRIPTION
XmListReplaceItemsPos replaces the specified number of items of the List with new items, starting at the specified position in the List.
When the items are inserted into the list, they are compared with the current XmNselectedItems list. If any of the new items matches an
item on the selected list, it appears selected. Specifies the ID of the List widget. Specifies the replacement items. Specifies the num-
ber of items in new_items and the number of items in the list to replace. This number must be non-negative. 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(3X).
SEE ALSO
XmList(3X)
XmListReplaceItemsPos(3X)