10-13-2008
Remove all blank lines in shell or awk.
Hi there,
I want to trim space between lines in unix.
I have a file named abc.txt with 2,00,000 lines.But useful are only a few. Please tell me how to delete the blank lines.
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¿How can i remove blank lines between all lines in a long text file?
Example
WrongFile.txt :
Line 1
Line 2
Line 3
CorrectFile.txt :
Line 1
Line 2
Line 3
Thanks in advance
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Hi gurus,
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or
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I am facing a problem related to removing blank lines from a text document.
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LEARN ABOUT SUNOS
insdelln
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)