Visit Our UNIX and Linux User Community

Top Forums UNIX for Advanced & Expert Users In a huge file, Delete duplicate lines leaving unique lines Post 302543879 by yazu on Tuesday 2nd of August 2011 10:27:49 AM
Old 08-02-2011
You can split the file (with "split" command), then "sort -u" the chunks separately and then merge them with "sort -m". (Of course whether you need it depends on the memory size of your system).
This User Gave Thanks to yazu For This Post:
 
Test Your Knowledge in Computers #245
Difficulty: Easy
In 1971, Ray Tomlinson, of BBN sent the first network e-mail.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Delete lines from huge file

I have to delete 1st 7000 lines of a file which is 12GB large. As it is so large, i can't open in vi and delete these lines. Also I found one post here which gave solution using perl, but I don't have perl installed. Also some solutions were redirecting the o/p to a different file and renaming it.... (3 Replies)
Discussion started by: rahulrathod
3 Replies

2. Shell Programming and Scripting

delete semi-duplicate lines from file?

Ok here's what I'm trying to do. I need to get a listing of all the mountpoints on a system into a file, which is easy enough, just using something like "mount | awk '{print $1}'" However, on a couple of systems, they have some mount points looking like this: /stage /stand /usr /MFPIS... (2 Replies)
Discussion started by: paqman
2 Replies

3. UNIX for Dummies Questions & Answers

Delete duplicate lines and print to file

OK, I have read several things on how to do this, but can't make it work. I am writing this to a vi file then calling it as an awk script. So I need to search a file for duplicate lines, delete duplicate lines, then write the result to another file, say /home/accountant/files/docs/nodup ... (2 Replies)
Discussion started by: bfurlong
2 Replies

4. UNIX for Dummies Questions & Answers

How to delete or remove duplicate lines in a file

Hi please help me how to remove duplicate lines in any file. I have a file having huge number of lines. i want to remove selected lines in it. And also if there exists duplicate lines, I want to delete the rest & just keep one of them. Please help me with any unix commands or even fortran... (7 Replies)
Discussion started by: reva
7 Replies

5. UNIX for Dummies Questions & Answers

Delete lines with duplicate strings based on date

Hey all, a relative bash/script newbie trying solve a problem. I've got a text file with lots of lines that I've been able to clean up and format with awk/sed/cut, but now I'd like to remove the lines with duplicate usernames based on time stamp. Here's what the data looks like 2007-11-03... (3 Replies)
Discussion started by: mattv
3 Replies

6. UNIX for Dummies Questions & Answers

How to delete partial duplicate lines unix

hi :) I need to delete partial duplicate lines I have this in a file sihp8027,/opt/cf20,1980182 sihp8027,/opt/oracle/10gRelIIcd,155200016 sihp8027,/opt/oracle/10gRelIIcd,155200176 sihp8027,/var/opt/ERP,10376312 and need to leave it like this: sihp8027,/opt/cf20,1980182... (2 Replies)
Discussion started by: C|KiLLeR|S
2 Replies

7. Shell Programming and Scripting

Delete lines in file containing duplicate strings, keeping longer strings

The question is not as simple as the title... I have a file, it looks like this <string name="string1">RZ-LED</string> <string name="string2">2.0</string> <string name="string2">Version 2.0</string> <string name="string3">BP</string> I would like to check for duplicate entries of... (11 Replies)
Discussion started by: raidzero
11 Replies

8. Shell Programming and Scripting

Delete duplicate lines... with a twist!

Hi, I'm sorry I'm no coder so I came here, counting on your free time and good will to beg for spoonfeeding some good code. I'll try to be quick and concise! Got file with 50k lines like this: "Heh, heh. Those darn ninjas. They're _____."*wacky The "canebrake", "timber" & "pygmy" are types... (7 Replies)
Discussion started by: shadowww
7 Replies

9. UNIX for Beginners Questions & Answers

How to delete identical lines while leaving one undeleted?

Hi, I have a file as follows. file1 Hello Hi His Hi Hi Hungry hi so I want to delete identical lines while leaving one of them undeleted. So desired output will be Hello Hi (2 Replies)
Discussion started by: beginner_99
2 Replies

10. UNIX for Beginners Questions & Answers

Delete duplicate like pattern lines

Hi I need to delete duplicate like pattern lines from a text file containing 2 duplicates only (one being subset of the other) using sed or awk preferably. Input: FM:Chicago:Development FM:Chicago:Development:Score SR:Cary:Testing:Testcases PM:Newyork:Scripting PM:Newyork:Scripting:Audit... (6 Replies)
Discussion started by: tech_frk
6 Replies
WRAP-AND-SORT(1)					      General Commands Manual						  WRAP-AND-SORT(1)

NAME
wrap-and-sort - wrap long lines and sort items in Debian packaging files SYNOPSIS
wrap-and-sort [options] DESCRIPTION
wrap-and-sort wraps the package lists in Debian control files. By default the lists will only split into multiple lines if the entries are longer than 80 characters. wrap-and-sort sorts the package lists in Debian control files and all .install files. Beside that wrap-and-sort removes trailing spaces in these files. This script should be run in the root of a Debian package tree. It searches for control, control.in, copyright, copyright.in, install, and *.install in the debian directory. OPTIONS
-h, --help Show this help message and exit. -a, --wrap-always Wrap all package lists in the Debian control file even if the entries are shorter than 80 characters and could fit in one line line. -s, --short-indent Only indent wrapped lines by one space (default is in-line with the field name). -b, --sort-binary-packages Sort binary package paragraphs by name. -k, --keep-first When sorting binary package paragraphs, leave the first one at the top. Unqualified debhelper(7) configuration files are applied to the first package. -n, --no-cleanup Do not remove trailing whitespaces. -d path, --debian-directory=path Location of the debian directory (default: ./debian). -f file, --file=file Wrap and sort only the specified file. You can specify this parameter multiple times. All supported files will be processed if no files are specified. -v, --verbose Print all files that are touched. AUTHORS
wrap-and-sort and this manpage have been written by Benjamin Drung <bdrung@debian.org>. Both are released under the ISC license. DEBIAN
Debian Utilities WRAP-AND-SORT(1)

Featured Tech Videos

All times are GMT -4. The time now is 09:51 AM.
Unix & Linux Forums Content Copyright 1993-2020. All Rights Reserved.
Privacy Policy