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Top Forums UNIX for Dummies Questions & Answers how do I insert argument into TOP of file using vi? Post 302129534 by zazzybob on Tuesday 31st of July 2007 11:22:10 AM
Old 07-31-2007
OK, sed's insert command would be hassle here, so awk is probably easiest. "line_file" is your input filename.

Code:
# get midway point - will be a floored integer
$ line_num=$(( $( wc -l < line_file ) / 2 ))
# insert text after that line
$ awk '{if ( NR=='"${line_num}"' ) {printf("%s\n%s\n",$0,"insert this");} else {print}}' line_file > line_file.new && mv line_file.new line_file

Cheers,
ZB
 

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DwtCSTextReplace(3Dwt)													    DwtCSTextReplace(3Dwt)

Name
       DwtCSTextReplace - Replaces a portion of the current text in the compound-string text widget or inserts some new text into the current text
       of the compound-string text widget.

Syntax
       void DwtCSTextReplace(widget, from_pos, to_pos, value)
	    Widget widget;
	    int from_pos, to_pos;
	    DwtCompString value;

Arguments
       widget	 Specifies the ID of the compound-string text widget.

       from_pos  Specifies the first character position of the compound-string text being replaced.

       to_pos	 Specifies the last character position of the compound-string text being replaced.

       value	 Specifies the text to replace part of the current text in the compound-string text widget.

Description
       The DwtCSTextReplace function replaces part of the text in the compound-string text widget.  Within  the  widget,  positions  are  numbered
       starting  at  0 and increasing sequentially.  For example, to replace the second and third characters in the text, from_pos should be 1 and
       to_pos should be 3.  To insert text after the fourth character, from_pos and to_pos should both be 4.

See Also
       DwtCSText(3Dwt), DwtCSTextCreate(3Dwt), DwtCSTextSetString(3Dwt),  DwtCSTextGetEditable(3Dwt),  DwtCSTextSetEditable(3Dwt),  DwtCS-
       TextGetMaxLength(3Dwt), DwtCSTextSetMaxLength(3Dwt), DwtCSTextSetSelection(3Dwt), DwtCSTextGetSelection(3Dwt)
       Guide to the XUI Toolkit: C Language Binding
       Guide to the XUI Toolkit Intrinsics: C Language Binding

															    DwtCSTextReplace(3Dwt)
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