06-14-2013
Is the file delimited (like with commas between field) or fixed record length?
This User Gave Thanks to joeyg For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
How to cut data from big file
my file around 30 gb
I tried "head -50022172 filename > newfile.txt ,and tail -5454283 newfile.txt. It's slowy.
afer that I tried sed -n '46467831,50022172p' filename > newfile.txt ,also slow
Please recommend me , faster command to cut some data from... (4 Replies)
Discussion started by: almanto
4 Replies
2. Shell Programming and Scripting
My input file:
data_5 Ali 422 2.00E-45 102/253 140/253 24
data_3 Abu 202 60.00E-45 12/23 140/23 28
data_1 Ahmad 256 7.00E-45 120/235 140/235 22
data_4 Aman 365 8.00E-45 15/65 140/65 20
data_10 Jones 869 9.00E-45 65/253 140/253 18... (12 Replies)
Discussion started by: patrick87
12 Replies
3. Shell Programming and Scripting
Hi,
I did read a few posts on the subjects, tried out a few solutions, but did not solve my problem.
https://www.unix.com/302121568-post11.html
https://www.unix.com/shell-programming-scripting/137953-large-file-columns-into-rows-etc-4.html
Please help. Problem very similar to the second link... (15 Replies)
Discussion started by: genehunter
15 Replies
4. Shell Programming and Scripting
Hello,
I have a big data file (160 MB) full of records with pipe(|) delimited those fields. I`m sorting the file on the first field.
I'm trying to sort with "sort" command and it brings me 6 minutes.
I have tried with some transformation methods in perl but it results "Out of memory". I was... (2 Replies)
Discussion started by: rubber08
2 Replies
5. Red Hat
Hey guys, we will be interested in learning from your experience in using Linux in Big Data projects. Has anyone used Hadoop, or MapR or Horton Works on Linux and any experiences you may have had on these. I am more interested in knowing if a certain distribution of Linux is better supported for... (1 Reply)
Discussion started by: johnsmith111
1 Replies
6. Shell Programming and Scripting
Hi all
I have a big file which I have attached here.
And, I have to fetch certain entries and arrange in 5 columns
Name Drug DAP ID disease approved or notIn the attached file data is arranged with tab separated columns in this way:
and other data is... (2 Replies)
Discussion started by: manigrover
2 Replies
7. What is on Your Mind?
Hello,
I have been working as Solaris/Linux Admin since past 8 years. I am looking options for my profile change, but there is some limitation. I worked as 24x7 support for admin, server support, high availability, etc. But been worked on developing side and scripting part.
When I search for Big... (2 Replies)
Discussion started by: nightup2222
2 Replies
8. Shell Programming and Scripting
Hi all, I'm pretty much a newbie to UNIX. I would appreciate any help with UNIX coding on comparing two large csv files (greater than 10 GB in size), and output a file with matching columns.
I want to compare file1 and file2 by 'id' and 'chain' columns, then extract exact matching rows'... (5 Replies)
Discussion started by: bkane3
5 Replies
9. Shell Programming and Scripting
Hi All,
I am trying to get some lines from a file i did it with while-do-loop. since the files are huge it is taking much time. now i want to make it faster.
The requirement is the file will be having 1 million lines.
The format is like below.
##transaction, , , ,blah, blah... (38 Replies)
Discussion started by: mad man
38 Replies
10. Shell Programming and Scripting
Hi all,
I have a file like this I want to extract only those regions which are big and continous
chr1 3280000 3440000
chr1 3440000 3920000
chr1 3600000 3920000 # region coming within the 3440000 3920000. so i don't want it to be printed in output
chr1 3920000 4800000
chr1 ... (2 Replies)
Discussion started by: amrutha_sastry
2 Replies
CUT(1) General Commands Manual CUT(1)
NAME
cut - select out columns of a file
SYNOPSIS
cut [ -b | -c] list [file...]
cut -f list [-d delim] [ -s]
OPTIONS
-b Cut specified bytes
-c Select out specific characters
-d Change the column delimiter to delim
-f Select out specific fields that are separated by the
-i Runs of delimiters count as one
-s Suppres lines with no delimiter characters, when used
EXAMPLES
cut -f 2 file # Extract field 2
cut -c 1-2,5 file # Extract character columns 1, 2, and 5
cut -c 1-5,7- file # Extract all columns except 6
DESCRIPTION
[file...]" delimiter character ( see delim)" with the -f option. Lines with no delimiters are passwd through untouched"
Cut extracts one or more fields or columns from a file and writes them on standard output. If the -f flag is used, the fields are sepa-
rated by a delimiter character, normally a tab, but can be changed using the -d flag. If the -c flag is used, specific columns can be
specified. The list can be comma or BLANK separated. The -f and -c flags are mutually exclusive. Note: The POSIX1003.2 standard requires
the option -b to cut out specific bytes in a file. It is intended for systems with multi byte characters (e.g. kanji), since MINIX uses
only one byte characters, this option is equivalent to -c. For the same reason, the option -n has no effect and is not listed in this man-
ual page.
SEE ALSO
sed(1), awk(9).
CUT(1)