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Top Forums Shell Programming and Scripting Count blank fields in every line Post 302831535 by nnani on Thursday 11th of July 2013 06:15:38 AM
Old 07-11-2013
Count blank fields in every line

Hello All,

I am trying a one liner for finding the number of null columns in every line of my flat file.

The format of my flat file is like this

Code:
a|b|c|d||||e|f|g|
a|b|c|d||||e|f|g|

I want to count the number of fields delimited by "|" which are blank.
In above case the count should be 3

The command tried by me is
Code:
cat filename | awk -F"|" '{print NF}'| head -1`

The is just giving me the count of all fields.

Please help me doing this
 

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XML2(1) 						      General Commands Manual							   XML2(1)

NAME
xml2 - convert xml documents in a flat format 2xml - convert flat format into xml html2 - convert html documents in a flat format 2html - convert flat format into html csv2 - convert csv files in a flat format 2csv - convert flat format into csv SYNOPSIS
<xml2|2xml|html2|2html|csv2|2csv> > outfile < infile DESCRIPTION
There are six tools. Except csv2 and and 2csv they don't take any command-line arguments. They are all simple filters which can be used to read files from standard input in one format and output it to standard output in another format. The flat format used by the tools is specific to these tools. It is a syntax for representing structured markup in a way that makes it easy to process with line-oriented tools. The same format is used for HTML and XML; in fact, you can think of html2 as converting HTML to XHTML and running xml2 on the result; likewise 2html and 2xml. (Of course, this isn't how the implementation works.) SEE ALSO
This program does normally not include any documentation in form of manpages. However it has a real excellent documentation online with a lot of example. In fact this manpage was based on this documentation. Please find it on: http://dan.egnor.name/xml2/ref Examples can be found here: http://dan.egnor.name/xml2/examples AUTHOR
xml2 was written by Dan Egnor. This manpage was written by Patrick Schoenfeld <schoenfeld@in-medias-res.com> for the Debian project, but may be used by others under the same terms as xml2 is distributed. BUGS
Bugs can be reported through the Debian Bug tracking system. 7h february 2008 XML2(1)
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