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Top Forums Shell Programming and Scripting return a list of unique values of a column from csv format file Post 302361520 by phoeberunner on Tuesday 13th of October 2009 11:39:48 AM
Old 10-13-2009
Hi,

I get correct number of unique "SampleID", but not "SNP". I wonder why it didn't work for "SNP" (column 1).

I used
$ cat abc.csv | cut -f1 -d , | uniq
to get list of unique "SNP", and

$ cat abc.csv | cut -f2 -d , | uniq
to get list of unique "SmpleID"

I have total of 8,634,9539 rows in the csv file. It supposed to have 54,9997 unique SNP, but it turned out to be 8,634,9539, which is the same as total rows of file.

Again, I get correct number of unique SampleID, which is 167.

Thanks a bunch!
 

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PROCESSCSV.PY(1)					      Virtualization Support						  PROCESSCSV.PY(1)

NAME
processcsv.py - process virt-top CSV files SUMMARY
virt-top --csv data.csv processcsv.py < data.csv DESCRIPTION
virt-top is a top(1)-like utility for showing stats of virtualized domains. processcsv.py is a simple Python script that post-processes the output of "virt-top --csv". It is used like this: virt-top --csv data.csv processcsv.py < data.csv The second command will overwrite the following files in the current directory: "global.csv" This contains the global (host) statistics columns from the CSV file. "domainNN.csv" (multiple files) For each libvirt domain ID NN, a file is created containing the per-domain statistics from the CSV file. SEE ALSO
virt-top(1) AUTHORS
Richard W.M. Jones <rjones @ redhat . com> COPYRIGHT
(C) Copyright 2007-2012 Red Hat Inc., Richard W.M. Jones http://libvirt.org/ This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. virt-top-1.0.8 2013-12-29 PROCESSCSV.PY(1)
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