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Top Forums Shell Programming and Scripting Reading from a CSV and writing in same CSV file Post 302698005 by kmajumder on Friday 7th of September 2012 05:54:23 PM
Old 09-07-2012
Reading from a CSV and writing in same CSV file

Hi,

I am tryng to read from a csv file and based on some grep command output I will modify one of the column in the same csv.

Example:-

Input CSV:-
Code:
20120829001415,noneAA,google.com
20120829001415,dfsafds,google.com
20120829001415,noneAA,google.com

Intermediate Step:- If 2nd column of input csv is noneAA then I have to run a grep and and store the result of the grep command and then update the 2nd column with the stored value received from the grep.

Output CSV:-
Code:
20120829001415,abcd,google.com
20120829001415,dfsafds,google.com
20120829001415,dfgd,google.com

Thanks in advance.
Moderator's Comments:
Mod Comment
Please use code tags when posting data and code samples!

Last edited by kmajumder; 09-07-2012 at 06:59 PM.. Reason: code tags, please!
 

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ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
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