CSV file:Find duplicates, save original and duplicate records in a new file
Hi Unix gurus,
Maybe it is too much to ask for but please take a moment and help me out. A very humble request to you gurus. I'm new to Unix and I have started learning Unix. I have this project which is way to advanced for me.
File format: CSV file
File has four columns with no header
File Size is 120GB.
Here are a few sample rows:
There are duplicates in column 1 and 4 (I know this for a fact).
I would like to find all the duplicates in column 1 and 4. In the example above, I want rows 2 and 3 (since the columns 1 has duplicates) and also rows 4 and 5 (since column four has duplicates).
If this is too complicated, may be I can look for duplicates in column 1 first and save a new file and then look for duplicates in column 4. (Since I am new to Unix, may be thats the way to go)
I want to save all the duplicates with original records (as in the example above) in a new CSV file.
---------- Post updated at 01:59 PM ---------- Previous update was at 01:56 PM ----------
For more clarity: My results would look like this:
Hi all
pls help me by providing soln for my problem
I'm having a text file which contains duplicate records .
Example:
abc 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
abc 1000 3452 2463 2343 2176 7654 3452 8765 5643 3452
tas 3420 3562 ... (1 Reply)
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Need to find a duplicate records on the first column,
ANU4501710430989 0000000W20389390
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ANU4501130050520 0000000W80838713
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File 1 below (3 record shown):
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I want to sort a csv file based on timestamp from oldest to newest and save the output as csv file itself. Here is an example of my csv file.
test.csv
SourceFile,DateTimeOriginal
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I have another problem. I want to sort another csv file by the first field.
result.csv
SourceFile,Airspeed,GPSLatitude,GPSLongitude,Temperature,Pressure,Altitude,Roll,Pitch,Yaw
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I have csv file with 30, 40 columns
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Discussion started by: as7951
7 Replies
LEARN ABOUT DEBIAN
msguniq
MSGUNIQ(1) GNU MSGUNIQ(1)NAME
msguniq - unify duplicate translations in message catalog
SYNOPSIS
msguniq [OPTION] [INPUTFILE]
DESCRIPTION
Unifies duplicate translations in a translation catalog. Finds duplicate translations of the same message ID. Such duplicates are invalid
input for other programs like msgfmt, msgmerge or msgcat. By default, duplicates are merged together. When using the --repeated option,
only duplicates are output, and all other messages are discarded. Comments and extracted comments will be cumulated, except that if
--use-first is specified, they will be taken from the first translation. File positions will be cumulated. When using the --unique
option, duplicates are discarded.
Mandatory arguments to long options are mandatory for short options too.
Input file location:
INPUTFILE
input PO file
-D, --directory=DIRECTORY
add DIRECTORY to list for input files search
If no input file is given or if it is -, standard input is read.
Output file location:
-o, --output-file=FILE
write output to specified file
The results are written to standard output if no output file is specified or if it is -.
Message selection:
-d, --repeated
print only duplicates
-u, --unique
print only unique messages, discard duplicates
Input file syntax:
-P, --properties-input
input file is in Java .properties syntax
--stringtable-input
input file is in NeXTstep/GNUstep .strings syntax
Output details:
-t, --to-code=NAME
encoding for output
--use-first
use first available translation for each message, don't merge several translations
--color
use colors and other text attributes always
--color=WHEN
use colors and other text attributes if WHEN. WHEN may be 'always', 'never', 'auto', or 'html'.
--style=STYLEFILE
specify CSS style rule file for --color
-e, --no-escape
do not use C escapes in output (default)
-E, --escape
use C escapes in output, no extended chars
--force-po
write PO file even if empty
-i, --indent
write the .po file using indented style
--no-location
do not write '#: filename:line' lines
-n, --add-location
generate '#: filename:line' lines (default)
--strict
write out strict Uniforum conforming .po file
-p, --properties-output
write out a Java .properties file
--stringtable-output
write out a NeXTstep/GNUstep .strings file
-w, --width=NUMBER
set output page width
--no-wrap
do not break long message lines, longer than the output page width, into several lines
-s, --sort-output
generate sorted output
-F, --sort-by-file
sort output by file location
Informative output:
-h, --help
display this help and exit
-V, --version
output version information and exit
AUTHOR
Written by Bruno Haible.
REPORTING BUGS
Report bugs to <bug-gnu-gettext@gnu.org>.
COPYRIGHT
Copyright (C) 2001-2010 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
The full documentation for msguniq is maintained as a Texinfo manual. If the info and msguniq programs are properly installed at your
site, the command
info msguniq
should give you access to the complete manual.
GNU gettext-tools 0.18.1 June 2010 MSGUNIQ(1)