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Top Forums Shell Programming and Scripting Insert a new line before every 5th line in a file Post 302646321 by royalibrahim on Friday 25th of May 2012 02:18:23 AM
Old 05-25-2012
Insert a new line before every 5th line in a file

Hi,

I need to insert a new line containing the string "QUERY" above every 5 lines.

The below piece of code inserts a new line after every 5th line
Code:
awk '{print $0} !(NR%5) {print "QUERY"}'

sed 'n;n;n;n;G;' --> I do not know how to give "QUERY" string here

But I need to insert it before every 5th line.
 

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CURSES_INSERTLN(3)					   BSD Library Functions Manual 					CURSES_INSERTLN(3)

NAME
curses_insertln, insertln, winsertln -- curses insert single line routines LIBRARY
Curses Library (libcurses, -lcurses) SYNOPSIS
#include <curses.h> int insertln(void); int winsertln(WINDOW *win); DESCRIPTION
These functions insert a single line on stdscr or on the specified window. The insertln() function inserts a blank line before the current line on stdscr. The current line and all lines below are moved down one line away from the cursor and the bottom line of the window is lost. The winsertln() function is the same as the insertln() function, excepting that the line is inserted on the window win. If a scrolling region has been set with the setscrreg() or wsetscrreg() functions and the current cursor position is inside the scrolling region, then only the lines from the current line to the bottom of the scrolling region are moved down and the bottom line of the scrolling region lost. The functions insertln() and winsertln(win) are equivalent to insdelln(1) and winsdelln(win, 1), respectively. RETURN VALUES
Functions returning pointers will return NULL if an error is detected. The functions that return an int will return one of the following values: OK The function completed successfully. ERR An error occurred in the function. SEE ALSO
curses_deleteln(3), curses_insdelln(3), curses_scroll(3) STANDARDS
The NetBSD Curses library complies with the X/Open Curses specification, part of the Single Unix Specification. HISTORY
The Curses package appeared in 4.0BSD. BSD
February 5, 2006 BSD
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