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Top Forums Shell Programming and Scripting Remove text from n position to n position sed/awk Post 302481489 by anurag.singh on Friday 17th of December 2010 04:53:14 PM
Old 12-17-2010
use one . symbol for each position in regular expression and use backereferencing mechanism to handle character/string at any position.
For above requirement:
Code:
 
echo "hello is there anyone can help me with this question" | sed 's/^\(.\)\(......................................\)\(....\)\(........\)$/\2\4/g'

One . in 1st \( and \) is for very 1st charater and can be backreferenced later using \1
Other dots in 2nd \( and \) is for all other position starting from 2nd charater upto space charater before "this". It will be backreferenced by \2
all dots in 3rd \( and \) is for "this".. and so on
In replace section, \1 (for h) and \3 (for this) is removed so they will not appear in output.
Hope this helps..
 

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XmTextPosToXY(library call)											       XmTextPosToXY(library call)

NAME
XmTextPosToXY -- A Text function that accesses the x and y position of a character position SYNOPSIS
#include <Xm/Text.h> Boolean XmTextPosToXY( Widget widget, XmTextPosition position, Position *x, Position *y); DESCRIPTION
XmTextPosToXY accesses the x and y position, relative to the upper left corner of the Text widget, of a given character position in the text buffer. In the case of horizontal writing, the position is the origin of the character. In the case of vertical writing, the position is the verti- cal origin of the character. widget Specifies the Text widget ID position Specifies the character position in the text for which the x and y position is accessed. This is an integer number of characters from the beginning of the buffer. The first character position is 0 (zero). x Specifies the pointer in which the x position is returned. The returned position is the distance from the left side of the wid- get to the left border of the character. This value is meaningful only if the function returns True. y Specifies the pointer in which the y position is returned. The returned position is the distance from the top of the widget to the character's baseline. This value is meaningful only if the function returns True. For a complete definition of Text and its associated resources, see XmText(3). RETURN
This function returns True if the character position is displayed in the Text widget; otherwise, it returns False, and no x or y value is returned. RELATED
XmText(3). XmTextPosToXY(library call)
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