11-06-2012
could you please try sort -u or uniq -u
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All,
I have a task to search through several hundred files and extract duplicate detail records and keep them grouped with their header record. If no duplicate detail record exists, don't pull the header. For example, an input file could look like this:
input.txt
HA
D1
D2
D2
D3
D4
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Hi all,
I have to remove duplicate lines in a file without chainging the order.for eg if i have a record
pqr
def
abc
lmn
pqr
abc
mkh
hgf
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I have i got a requirement like below.
I have input file which contains following fixed width records.
00000000000088500232007112007111
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Hi Gurus,
Do any kind souls encounter have the same script as mentioned here.
Find and compare filenames in different mount point and remove duplicates.
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Hi,
In a file, I have to mark duplicate records as 'D' and the latest record alone as 'C'.
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Hi,
I need help on a complicated file that I am working on. I wanted to extract important info from a very huge file. It is space delimited file. I have hundred thousands of records in this file. An example content of the inputfile as below:-
##
ID Ser402 Old; 23... (2 Replies)
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I have some text data that is in the form of multi-line records. Each record ends with the string $$$$ and the next record starts on the next line.
RDKit 2D
15 14 0 0 0 0 0 0 0 0999 V2000
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Hi,
In an ideal scenario, I will have a listing of db transaction log that gets copied to a DR site and if I have them all, they will be numbered consecutively like below.
1_79811_01234567.arc
1_79812_01234567.arc
1_79813_01234567.arc
1_79814_01234567.arc
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UNIQ(1) User Commands UNIQ(1)
NAME
uniq - report or omit repeated lines
SYNOPSIS
uniq [OPTION]... [INPUT [OUTPUT]]
DESCRIPTION
Filter adjacent matching lines from INPUT (or standard input), writing to OUTPUT (or standard output).
With no options, matching lines are merged to the first occurrence.
Mandatory arguments to long options are mandatory for short options too.
-c, --count
prefix lines by the number of occurrences
-d, --repeated
only print duplicate lines, one for each group
-D, --all-repeated[=METHOD]
print all duplicate lines groups can be delimited with an empty line METHOD={none(default),prepend,separate}
-f, --skip-fields=N
avoid comparing the first N fields
--group[=METHOD]
show all items, separating groups with an empty line METHOD={separate(default),prepend,append,both}
-i, --ignore-case
ignore differences in case when comparing
-s, --skip-chars=N
avoid comparing the first N characters
-u, --unique
only print unique lines
-z, --zero-terminated
end lines with 0 byte, not newline
-w, --check-chars=N
compare no more than N characters in lines
--help display this help and exit
--version
output version information and exit
A field is a run of blanks (usually spaces and/or TABs), then non-blank characters. Fields are skipped before chars.
Note: 'uniq' does not detect repeated lines unless they are adjacent. You may want to sort the input first, or use 'sort -u' without
'uniq'. Also, comparisons honor the rules specified by 'LC_COLLATE'.
GNU coreutils online help: <http://www.gnu.org/software/coreutils/> Report uniq translation bugs to <http://translationproject.org/team/>
AUTHOR
Written by Richard M. Stallman and David MacKenzie.
COPYRIGHT
Copyright (C) 2013 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
comm(1), join(1), sort(1)
The full documentation for uniq is maintained as a Texinfo manual. If the info and uniq programs are properly installed at your site, the
command
info coreutils 'uniq invocation'
should give you access to the complete manual.
GNU coreutils 8.22 June 2014 UNIQ(1)