How to remove certain lines using sed? Post: 302814893

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Top Forums UNIX for Dummies Questions & Answers How to remove certain lines using sed? Post 302814893 by Sivajee on Thursday 30th of May 2013 01:54:34 PM

Old

05-30-2013

Registered User

Hi,

i need to delete entire print lines... Like my file is having some printf statements. I need to remove all the printf lines in my file. These printf statements might be in a single line or it might stretch for 2 lines also( in this case these two lines have to be deleted as these two line together a printf statement). say my file is as follows:

$cat testfile.txt
1. pritnf 'this is first line ' .
2. printf ' this is second line '
'this is continuous line ' .
3. print ' this is 3rd line '
' it is still there '
' now its over ' .
4. set a = b
5. MOVE A TO B

output :
4. set a = b
5. MOVE A TO B

Please let me know how to delete those printf lines using sed in unix.

Thanks in advance..

Sivajee

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LEARN ABOUT SUNOS

winsdelln

insdelln(3XCURSES)					  X/Open Curses Library Functions					insdelln(3XCURSES)

NAME

       insdelln, winsdelln - insert/delete lines to/from the window

SYNOPSIS

       cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib 
       -R /usr/xpg4/lib -lcurses [ library... ]

       c89 [ flag... ] file... -lcurses [ library... ]

       #include <curses.h>

       int insdelln(int n);

       int winsdelln(WINDOW *win, int n);

PARAMETERS

       n		       Is the number of lines to insert or delete (positive n inserts; negative n deletes).

       win		       Is a pointer to the window in which to insert or delete a line.

DESCRIPTION

       The  insdelln()	and  winsdelln() functions insert or delete blank  lines  in stdscr or win, respectively.  When n is positive, n lines are
       added before the current line  and the bottom n lines are lost; when n is negative, n lines  are deleted starting with  the  current  line,
       the remaining lines are moved up,  and the bottom n lines are cleared. The position of the cursor does not change.

RETURN VALUES

       On success, these functions return OK. Otherwise, they return ERR.

ERRORS

       None.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |Unsafe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       deleteln(3XCURSES), insertln(3XCURSES), libcurses(3XCURSES), attributes(5), standards(5)

SunOS 5.10							    5 Jun 2002							insdelln(3XCURSES)