I wish to delete lines from a log file. Should take a date string as a variable. Find the date in the file, get the line number for the string. Delete lines from 1 to that (line number - 1), all from within a shell script. Is that possible ?.
Thnks,
:confused: (6 Replies)
Hi,
Just consider there are around 10 lines in a file. Now is it possible to delete the first 2 lines in the file without opening the file. No matter whatever the content of the file is, I just wanna delete the first 2 lines without opening the file. Is that possible? If so, please help me out.... (3 Replies)
Hi,
Im doing a script to find the number of lines included inside a file newly. These lines are in between #ifdef FLAG1 and #else or #endif or #else and #endif.
I tried like this,
awk '/#ifdef Flag1/,/#e/{print}' aa.c | wc -l
awk '/#ifndef Flag1/,/#endif/{print}' aa.c | awk... (6 Replies)
Input:
a
b
b
c
d
d
I need:
a
c
I know how to get this (the lines that have duplicates) :
b
d
sort file | uniq -d
But i need opossite of this. I have searched the forum and other places as well, but have found solution for everything except this variant of the problem. (3 Replies)
Hi Gurus,
I am working with a korn shell script to simplify some operations of calculation number of lines inside compressed file.
The called function (inside a cycle) is the following:
#########################################
# F.ne: CheckCount
#########################################... (3 Replies)
Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
I have a text file say g1.txt and content of this file is ...as below
1|HideCDrive, | : REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer" /v NoDrives /t REG_DWORD /d 4 /f,
2|HideRunButton, | : REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer"... (7 Replies)
Hello,
I have file of more than 10000 lines.
I want to delete 40 lines after every 20 lines.
e.g from a huge file, i want to delete line no from 34 - 74, then 94 - 134 etc and so on.
Please let me know how i can do it.
Best regards, (11 Replies)
Discussion started by: nehashine
11 Replies
LEARN ABOUT NETBSD
curses_insdelln
CURSES_INSDEL(3) BSD Library Functions Manual CURSES_INSDEL(3)NAME
curses_insdelln, insdelln, winsdelln -- curses insert or delete lines routines
LIBRARY
Curses Library (libcurses, -lcurses)
SYNOPSIS
#include <curses.h>
int
insdelln(int n);
int
winsdelln(WINDOW *win, int n);
DESCRIPTION
These functions insert or delete lines on stdscr or on the specified window.
If insdelln() is called with a positive number in n, then the specified number of lines are inserted before the current line on stdscr. The
last n lines of the screen are no longer displayed. If n is negative, then n lines are deleted from stdscr, starting at the current line.
The last n lines of stdscr are cleared.
The winsdelln() function is the same as the insdelln() function, excepting that lines are inserted or deleted from the window specified by
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 affected.
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_insertln(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 August 12, 2002 BSD