I am doing KSH script to remove duplicate lines in a file. Let say the file has format below.
FileA
1253-6856
3101-4011
1827-1356
1822-1157
1822-1157
1000-1410
1000-1410
1822-1231
1822-1231
3101-4011
1822-1157
1822-1231
and I want to simply it with no duplicate line as file... (5 Replies)
I have a log file "logreport" that contains several lines as seen below:
04:20:00 /usr/lib/snmp/snmpdx: Agent snmpd appeared dead but responded to ping
06:38:08 /usr/lib/snmp/snmpdx: Agent snmpd appeared dead but responded to ping
07:11:05 /usr/lib/snmp/snmpdx: Agent snmpd appeared dead but... (18 Replies)
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)
greetings,
i'm hoping there is a way to cat a file, remove duplicate lines and send that output to a new file. the file will always vary but be something similar to this:
please keep in mind that the above could be eight occurrences of each hostname or it might simply have another four of an... (2 Replies)
Hi,
I have two files with below data::
file1:-
123|aaa|ppp
445|fff|yyy
999|ttt|jjj
555|hhh|hhh
file2:-
445|fff|yyy
555|hhh|hhh
The records present in file1, not present in file 2 should be writtent to the out put file.
output:-
123|aaa|ppp
999|ttt|jjj
Is there any one line... (3 Replies)
Hey guys, need some help to fix this script. I am trying to remove all the duplicate lines in this file.
I wrote the following script, but does not work. What is the problem?
The output file should only contain five lines:
Later! (5 Replies)
Hi,
I have a csv file which contains some millions of lines in it.
The first line(Header) repeats at every 50000th line. I want to remove all the duplicate headers from the second occurance(should not remove the first line).
I don't want to use any pattern from the Header as I have some... (7 Replies)
Dear community,
I have to remove duplicate lines from a file contains a very big ammount of rows (milions?) based on 1st and 3rd columns
The data are like this:
Region 23/11/2014 09:11:36 41752
Medio 23/11/2014 03:11:38 4132
Info 23/11/2014 05:11:09 4323... (2 Replies)
Hi, all
I have a csv file that I would like to remove duplicate lines based on 1st field and sort them by the 1st field. If there are more than 1 line which is same on the 1st field, I want to keep the first line of them and remove the rest. I think I have to use uniq or something, but I still... (8 Replies)
Discussion started by: refrain
8 Replies
LEARN ABOUT CENTOS
hardlink
hardlink(1) General Commands Manual hardlink(1)NAME
hardlink - Consolidate duplicate files via hardlinks
SYNOPSIS
hardlink [-c] [-n] [-v] [-vv] [-h] directory1 [ directory2 ... ]
DESCRIPTION
This manual page documents hardlink, a program which consolidates duplicate files in one or more directories using hardlinks.
hardlink traverses one or more directories searching for duplicate files. When it finds duplicate files, it uses one of them as the mas-
ter. It then removes all other duplicates and places a hardlink for each one pointing to the master file. This allows for conservation of
disk space where multiple directories on a single filesystem contain many duplicate files.
Since hard links can only span a single filesystem, hardlink is only useful when all directories specified are on the same filesystem.
OPTIONS -c Compare only the contents of the files being considered for consolidation. Disregards permission, ownership and other differ-
ences.
-f Force hardlinking across file systems.
-n Do not perform the consolidation; only print what would be changed.
-v Print summary after hardlinking.
-vv Print every hardlinked file and bytes saved. Also print summary after hardlinking.
-h Show help.
AUTHOR
hardlink was written by Jakub Jelinek <jakub@redhat.com>.
Man page written by Brian Long.
Man page updated by Jindrich Novy <jnovy@redhat.com>
BUGS
hardlink assumes that its target directory trees do not change from under it. If a directory tree does change, this may result in hardlink
accessing files and/or directories outside of the intended directory tree. Thus, you must avoid running hardlink on potentially changing
directory trees, and especially on directory trees under control of another user.
hardlink(1)