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Top Forums Shell Programming and Scripting Finding total distinct count from multiple csv files through UNIX script Post 303002567 by STCET22 on Monday 28th of August 2017 02:08:45 AM
Old 08-28-2017
Finding total distinct count from multiple csv files through UNIX script

Hi All ,
I have multiple pipe delimited csv files are present in a directory.I need to find out distinct count on a column on those files and need the total distinct
count on all files.

We can't merge all the files here as file size are huge in millions.I have tried in below way for each files.
Code:
cat Test1.csv|cut -d"|" -f38|uniq|wc -l
cat Test2.csv|cut -d"|" -f38|uniq|wc -l
cat Test3.csv|cut -d"|" -f38|uniq|wc -l

I need to automate the above procedure (ex: by putting each files count in a temporary file)as multiple csv files are present in the directory as I need the total distinct count on a column on all those files.Can anyone please help me with this.

Last edited by Don Cragun; 08-28-2017 at 04:00 AM.. Reason: Change HTML tags to CODE tags.
 

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BB-CSVINFO.CGI(1)					      General Commands Manual						 BB-CSVINFO.CGI(1)

NAME
bb-csvinfo.cgi - CGI program to show host information from a CSV file SYNOPSIS
bb-csvinfo.cgi DESCRIPTION
bb-csvinfo.cgi is invoked as a CGI script via the bb-csvinfo.sh CGI wrapper. Based on the parameters it receives, it searches a comma- separated file for the matching host, and presents the information found as a table. bb-csvinfo.cgi is passed a QUERY_STRING environment variable with the following parameters: key (string to search for, typically hostname) column (columnnumber to search - default 0) db (name of the CSV database file in $BBHOME/etc/, default hostinfo.csv) delimiter (delimiter character for columns, default semi-colon) CSV files are easily created from e.g. spreadsheets, by exporting them in CSV format. You should have one host per line, with the first line containing the column headings. Despite their name, the default delimiter for CSV files is the semi-colon - if you need a different delimiter, invoke bb-csvinfo.cgi with the "delimiter=<character>" in the query string. Example usage This example shows how you can use the bb-csvinfo CGI. It assumes you have a CSV-formatted file with information about the hosts stored as $BBHOME/etc/hostinfo.csv, and the hostname is in the first column of the file. Use with the bbgen --docurl The --docurl option to bbgen(1) sets up all of the hostnames on your Xymon webpages to act as links to a CGI script. To invoke the bb-csvinfo CGI script, run bbgen with the option --docurl=/cgi-bin/bb-csvinfo.sh?db=hostinfo.csv&key=%s SEE ALSO
bb-hosts(5), hobbitserver.cfg(5), bbgen(1) Xymon Version 4.2.3: 4 Feb 2009 BB-CSVINFO.CGI(1)
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