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Full Discussion: Finding total distinct count from multiple csv files through UNIX script
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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OCR4GAMERA(1)															     OCR4GAMERA(1)

NAME

       ocr4gamera - OCR system using the Gamera framework

USAGE

       ocr4gamera -x <traindata> [options] <imagefile>

OPTIONS

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	      Set verbosity level to <int>.  Possible values are 0 (default): silent operation; 1:  information on progress; >2: segmentation info
	      is written to PNG files with prefix debug_.

       -h, --help
	      Display help and exit.

       -d, --deskew
	      Do a skew correction (recommended).

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       -a, --automatic-group
	      Autogroup glyphs with classifier.

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	      Read training data from <file>.

       -o <xml>, --output=<xml>
	      Write recognized text to file <xml> (otherwise it is written to stdout).

       -c <csv>, --extra_chars_csvfile=<csv>
	      Read additional class name conversions from file <csv>.  <csv> must contain one conversion per line.

       -R <rules>, --heuristic_rules=<rules>
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																     OCR4GAMERA(1)
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