11-10-2005
removing lines in a too long file
HI, i need to remove about a 3000000 lines in a "too long file", without using vi editor. Im using hp-ux 11.0.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello
i have 2 files file1 and file2 as shown below
file1
110010000000206|567810008161509
110010000000207|567810072227627
110010000000208|567811368851555
110010000000209|567811422513652
110010000000210|567812130217683
110010000000211|567813220211182
110010000000212|567813449322589... (4 Replies)
Discussion started by: PradeepRed
4 Replies
2. Shell Programming and Scripting
Hi There,
I've written a script that processes a data file on our system. Basically the script reads a post code from a list file, looks in the data file for the first occurrence (using grep) and reads the line number. It then tails the data file, with the line number just read, and outputs to a... (3 Replies)
Discussion started by: tookers
3 Replies
3. AIX
Hi Gurus,
I'm a little new to UNIX. How can I do remove the first and last line in a file? Say, supppose I have a file as below:
1DMA
400002BARRIE
401002CALGARY/LETHBRI
402002CARLETON
500001PORTLAND-AUBRN
501001NEW YORK, NY ... (1 Reply)
Discussion started by: naveendronavall
1 Replies
4. Shell Programming and Scripting
Hi Gurus,
I'm a little new to UNIX. How can I do remove the first and last line in a file? Say, supppose I have a file as below:
Code:
1DMA
400002BARRIE
401002CALGARY/LETHBRI
402002CARLETON
500001PORTLAND-AUBRN
501001NEW YORK, NY
502001BINGHAMTON, NY ... (2 Replies)
Discussion started by: naveendronavall
2 Replies
5. Shell Programming and Scripting
Hi
Does anybody know of a command that will enable me to remove all entries in a file that have the format (name & time)
more testfile
anthony 2003
anthonyr 2008
amorel 15:00
anthonyp 14:35
anthonyp 14:35
anthonyr 2008
ardean 13:28
arlene 2003
arlenem 08:15
arlenem 08:15... (5 Replies)
Discussion started by: jamba1
5 Replies
6. UNIX for Dummies Questions & Answers
Hi folks, I have a long string of DNA sequences, and I need to remove several lines, as well as the line directly following them. For example, here is a sample of my starting material:
>548::GY31UMJ02DLYEH rank=0007170 x=1363.5 y=471.0 length=478... (1 Reply)
Discussion started by: kkohl78
1 Replies
7. Shell Programming and Scripting
For people who want to pull a number of lines from a long file using a specific formula
n (number of iterations in a loop)
a (offset number)
b (stretch factor)
example with n {1..100}
for (( n=1; n<101; n++ )); do awk -v n=$n 'NR==a+(b*n)' a=0 b=1 inputfile >>outputfile (2 Replies)
Discussion started by: sgruenwald
2 Replies
8. Shell Programming and Scripting
Hi,
I have a linux server that was hacked and I have a bunch of files that sporadically contain the following lines through out the file:
<?php eval(base64_decode("Xxxxxxxxxxxxxx/xxxxxxxx"));
I did't put the exact lines of the file in this post. The "Xxxx" are random letters/numbers.... (8 Replies)
Discussion started by: nck
8 Replies
9. Windows & DOS: Issues & Discussions
Hi Experts,
I have a Unix csv file which has long records ie the record length is more than 80 so it goes to the next line.So when its in unix though it spans to two or three lines it still counts it as one record.
But what is happening is for the records that are long when i copy it into excel i... (0 Replies)
Discussion started by: 100bees
0 Replies
10. Shell Programming and Scripting
I have a file `/tmp/wrk` containing filenames with paths. I want to remove filenames
from this file, for example
remove all filenames containing alja cagr cavt clta cmdo or corl
remove all filenames containing data for days in region `d.2016.001` to `d.2016.207`
remove all filenames... (10 Replies)
Discussion started by: kristinu
10 Replies
LEARN ABOUT OPENDARWIN
end
GET_END(3) Library Functions Manual GET_END(3)
NAME
get_end, get_etext, get_edata - get values of UNIX link editor defined symbols
SYNOPSIS
#include <mach-o/getsect.h>
unsigned long get_end();
unsigned long get_etext();
unsigned long get_edata();
DESCRIPTION
These routines provide a stopgap measure to programs that use the UNIX link-editor defined symbols. Use of these routines is very strongly
discouraged. The problem is that any program that is using UNIX link editor defined symbols (_end, _etext or _edata) is making assumptions
that the program has the memory layout of a UNIX program.
This is an incorrect assumption for a program built by the Mach-O link editor. The reason that these routines are provided is that if very
minimal assumptions about the layout are used and the default format and memory layout of the Mach-O link editor is used to build the pro-
gram, some things may work by using the values returned by these routines in place of the addresses of their UNIX link-editor defined sym-
bols. So use at your own risk, and only if you know what your doing. Or better yet, convert the program to use the appropriate Mach or
Mach-O functions. If you are trying to allocate memory use vm_allocate(2), if you are trying to find out about your address space use
vm_region(2) and if you are trying to find out where your program is loaded use the dyld(3) functions.
The values of the UNIX link-editor defined symbols _etext, _edata and _end are returned by the routines get_etext, get_edata, and get_end
respectively. In a Mach-O file they have the following values: get_etext returns the first address after the (__TEXT,__text) section, note
this my or may not be the only section in the __TEXT segment. get_edata returns the first address after the (__DATA,__data) section, note
this my or may not be the last non-zero fill section in the __DATA segment. get_end returns the first address after the last segment in
the executable, note a shared library may be loaded at this address.
SEE ALSO
ld(1), dyld(3)
Apple Computer, Inc. April 10, 1998 GET_END(3)