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Top Forums Shell Programming and Scripting Fix CSV file with column missing quotes Post 302472278 by EmptyH on Tuesday 16th of November 2010 05:39:44 PM
Old 11-16-2010
Fix CSV file with column missing quotes

I have a CSV file that is missing quotes around a column that contains text with commas. Example:
Code:
Column1, Column2, Column3, Column4, Column5, Column6
Data1, Data2, Data3, Data, 4, Data5, Data6
Data1, Data3, Data3, Data, text, 4, Data5, Data6

I think the easiest way for me to fix this is to replace the 3rd instance of a comma with a comma quote using the following sed command:
Code:
sed 's/,/,"/3' myfile.csv

The problem is that the 4th column has an unknown number of commas, so to provide the matching quote mark, I have to replace the 2nd to last instance of a comma with a quote comma. Unfortunately, I cannot figure out how to do this.

Suggestions?

Thanks.

Last edited by Franklin52; 11-17-2010 at 05:41 AM.. Reason: Please use code tags
 

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PR(1)							      General Commands Manual							     PR(1)

NAME
pr - print file SYNOPSIS
pr [ option ... ] [ file ... ] DESCRIPTION
Pr produces a printed listing of one or more files on its standard output. The output is separated into pages headed by a date, the name of the file or a specified header, and the page number. With no file arguments, pr prints its standard input. Options apply to all following files but may be reset between files: -n Produce n-column output. +n Begin printing with page n. -b Balance columns on last page, in case of multi-column output. -d Double space. -en Set the tab stops for input text every n spaces. -h Take the next argument as a page header (file by default). -in Replace sequences of blanks in the output by tabs, using tab stops set every n spaces. -f Use formfeeds to separate pages. -ln Take the length of the page to be n lines instead of the default 66. -m Print all files simultaneously, each in one column. -n Number the lines of each file. -on Offset the left margin n character positions. -sc Separate columns by the single character c instead of aligning them with white space. A missing c is taken to be a tab. -t Do not print the 5-line header or the 5-line trailer normally supplied for each page. -wn For multi-column output, take the width of the page to be n characters instead of the default 72. SOURCE
/sys/src/cmd/pr.c SEE ALSO
cat(1), lp(1) PR(1)
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