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Top Forums Shell Programming and Scripting return a list of unique values of a column from csv format file Post 302361294 by daptal on Monday 12th of October 2009 11:39:06 PM
Old 10-13-2009
Code:
 cat abc.csv
SNP, SampleID, Allele1, Allele2
A001,AB1,A,A
A002,AB1,A,A
A003,AB1,A,A

Instead of abc.csv substitute your csv file name
Code:
$ cat abc.csv  | cut -f1 -d , | uniq
SNP
A001
A002
A003

HTH,
PL
 

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CSV2REC(1)							   User Commands							CSV2REC(1)

NAME
csv2rec - csv to rec converter SYNOPSIS
csv2rec [OPTIONS]... [CSV_FILE] DESCRIPTION
Convert csv data into rec data. -t, --type=TYPE type name for the converted records; if this parameter is ommited then no type is used. -s, --strict be strict parsing the csv file. -e, --omit-empty omit empty fields. --help print a help message and exit. --version show version and exit. AUTHOR
Written by Jose E. Marchesi. REPORTING BUGS
Report bugs to: bug-recutils@gnu.org GNU recutils home page: <http://www.gnu.org/software/recutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2010, 2011, 2012 Jose E. Marchesi. 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 csv2rec is maintained as a Texinfo manual. If the info and csv2rec programs are properly installed at your site, the command info csv2rec should give you access to the complete manual. csv2rec 1.4.93 January 2012 CSV2REC(1)
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