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CSV file REPLACE COLUMN if it matches

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# 1  
Old 09-01-2014
CSV file REPLACE COLUMN if it matches
I have a file
Code:
cat 1.txt
AAAA , BBBB , CCCC , DDDD
DFDF , DFDF , DFDF , FDDD
AA11 , DFDF , 0000 , UTIO
ADSD , WERT, 0000 , JKJL

If the 3rd column is not equal to "0000" , then it should replace "0000" with "XXXX" and if its equal to "0000" then print the line as it is.

need help.
Last edited by Franklin52; 09-01-2014 at 09:54 AM.. Reason: Please use code tags
# 2  
Old 09-01-2014
Hello Aravindj80,

Could you please use code tags for commands and codes which you are using in your post. This is one of the very important rule for this forum which you have agreed during your user account creation. you can refer the forum rule guidlines also for same as follows.
https://www.unix.com/misc.php?do=cfrules

Following may help you in your requirement.

Code:
awk -F"," '($3 !~ 0) {gsub(/.*/," XXXX ",$3);} 1' OFS=","   filename

Output will be as follows.

Code:
AAAA , BBBB , XXXX , DDDD
DFDF , DFDF , XXXX , FDDD
AA11 , DFDF , 0000 , UTIO
ADSD , WERT, 0000 , JKJL

Thanks,
R. Singh
Last edited by RavinderSingh13; 09-01-2014 at 08:42 AM.. Reason: Added rules link for user
# 3  
Old 09-01-2014
I tried it , but all the rows are getting replaced with XXXX
# 4  
Old 09-01-2014
Code:
awk -F '[ ]*,[ ]*' '$3 != "0000" {$3="XXXX"}1' OFS=, file

If you want spaces before and after ,
Code:
awk -F '[ ]*,[ ]*' '$3 != "0000" {$3="XXXX"}1' OFS=' , ' file

Last edited by SriniShoo; 09-01-2014 at 09:03 AM.. Reason: Corrected solution
# 5  
Old 09-01-2014
Hi Aravind,

Code which I have given is working fine for me, could you please show us which output you are getting along with your OS details and please use code tags while using commands/codes.

Thanks,
R. Singh
# 6  
Old 09-01-2014
Thanks it worked great , if i want to start the replacement from the 2nd line as first line has header , how it is possible ?
# 7  
Old 09-01-2014
Hi Aravind,

If you are referring to my solution then following may help.

Code:
awk -F"," ' NR>1 && ($3 !~ 0) {gsub(/.*/," XXXX ",$3);} 1' OFS=","   filename

if you are reffering to Srini's solution then kindly add NR>1 in the starting of the solution.


Thanks,
R. Singh
Last edited by RavinderSingh13; 09-02-2014 at 01:36 AM.. Reason: Adding && to solution, Thanks to Rudi C
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