Hi,
I'm not a expert in shell programming, so i've come here to take help from u gurus.
I'm trying to tailor a csv file that i got to make it work for the LOAD FROM command.
I've a datatable csv of the below format -
--in file format
xx,xx,xx ,xx , , , , ,,xx,
xxxx,, ,, xxx,... (11 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)
Hello to all, happy new year 2013!
May somebody could help me, is about a very similar problem to the problem I've posted here where the member rdrtx1 and bipinajith helped me a lot.
https://www.unix.com/shell-programming-scripting/211147-map-values-blocks-single-line-2.html
It is very... (3 Replies)
I would like to print unique lines without sort or unique. Unfortunately the server I am working on does not have sort or unique. I have not been able to contact the administrator of the server to ask him to add it for several weeks. (7 Replies)
Hi,
I have a huge file which has Lacs of lines. File system got full.
I want your guys help to suggest me a solution so that I can remove all lines from that file but not last 50,000 lines. I want solution which can remove lines from existing file so that I can have some space left with. (28 Replies)
I have two files, a keepout.txt and a database.csv. They're unsorted, but could be sorted.
keepout:
user1
buser3
anuser19
notheruser27
database:
user1,2343,"information about",field,blah,34
user2,4231,"mo info",etc,stuff,43
notheruser27,4344,"hiya",thing,more thing,423... (4 Replies)
Hi, I have the 3-column, tab-separated following data:
dot is-big 2
dot is-round 3
dot is-gray 4
cat is-big 3
hot in-summer 5
I want to remove all of those lines in which the values of Columns 1 and 2 are identical. In this way, the results would be as follows:
dot is-big 2
cat... (4 Replies)
Hello everyone,
Although it seems easy, I've been stuck with this problem for a moment now and I can't figure out a way to get it done.
My problem is the following:
I have a file where each line is a sequence of IP addresses, example :
10.0.0.1 10.0.0.2
10.0.0.5 10.0.0.1 10.0.0.2... (5 Replies)
I have been searching and trying to come up with an awk that will perform the following on a
converted text file (original is a pdf).
1. Since the first two lines are (begin with) text they are removed
2. if $1 is a number then all text is merged (combined) into one line until the next... (3 Replies)
Discussion started by: cmccabe
3 Replies
LEARN ABOUT MOJAVE
io::lines5.18
IO::Lines(3) User Contributed Perl Documentation IO::Lines(3)NAME
IO::Lines - IO:: interface for reading/writing an array of lines
SYNOPSIS
use IO::Lines;
### See IO::ScalarArray for details
DESCRIPTION
This class implements objects which behave just like FileHandle (or IO::Handle) objects, except that you may use them to write to (or read
from) an array of lines. They can be tiehandle'd as well.
This is a subclass of IO::ScalarArray in which the underlying array has its data stored in a line-oriented-format: that is, every element
ends in a "
", with the possible exception of the final element. This makes "getline()" much more efficient; if you plan to do line-
oriented reading/printing, you want this class.
The "print()" method will enforce this rule, so you can print arbitrary data to the line-array: it will break the data at newlines
appropriately.
See IO::ScalarArray for full usage and warnings.
VERSION
$Id: Lines.pm,v 1.3 2005/02/10 21:21:53 dfs Exp $
AUTHORS
Primary Maintainer
David F. Skoll (dfs@roaringpenguin.com).
Principal author
Eryq (eryq@zeegee.com). President, ZeeGee Software Inc (http://www.zeegee.com).
Other contributors
Thanks to the following individuals for their invaluable contributions (if I've forgotten or misspelled your name, please email me!):
Morris M. Siegel, for his $/ patch and the new "getlines()".
Doug Wilson, for the IO::Handle inheritance and automatic tie-ing.
perl v5.18.2 2005-02-10 IO::Lines(3)