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Top Forums UNIX for Dummies Questions & Answers delete traling blank lines only Post 302173138 by visu on Wednesday 5th of March 2008 05:34:40 PM
Old 03-05-2008
Question delete traling blank lines only

Hi,

I have blank line in the file, I just want to remove trailing blank lines.
There are some blank lines between the lines, i don't want remove those.
Just want to delete blank lines at the end.

I used this command sed '/^$/d' infile > outfile, but it is not removing anything.
I think this file has spaces and TABS in insted empty lines.

so I used this command
grep -v '^[[:space:]]*$' infile > outfile
it removed blank lines at the end as well blank lines in middle.

I dont want remove blank lines in the between the lines.

Please help to solve this problem.

Thanks,

Visu
 

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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 5.11 5 Jun 2002 insdelln(3XCURSES)
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