Visit The New, Modern Unix Linux Community

Replace value in csv file with match from another file

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Replace value in csv file with match from another file
# 1  
Question Replace value in csv file with match from another file

Good morning everyone and hello!

I'm trying to solve a problem and was unable to find a solution after a forum research. So hopefully you can help me get this solved.

I have these two csv files:

What I'm trying to achieve is to replace the 'REFERENCE' column in file1.csv with the respective line from file2.csv (matching 'REFERENCE'). So the output I want is:
I have played around with the JOIN command in conjunction with SORT, but to no avail yet. Does anyone have an idea how to do that?

Thanks a lot,
# 2  
You may try this:
awk -F, 'FNR==NR{
if(NR>1) a[$1]=$0
{if(FNR==1) next
 $2 = ($2 in a ? a[$2] : "NOT FOUND") }
1' OFS=, file2.csv file1.csv

This User Gave Thanks to elixir_sinari For This Post:
# 3  
Thank you, Sir.
This awk does exactly what I need and it works on the actual data files. You made me very happy :-)

Previous Thread | Next Thread
Thread Tools Search this Thread
Search this Thread:
Advanced Search

Test Your Knowledge in Computers #980
Difficulty: Easy
Releases of Mac OS X from 1999 to 2005 ran on the Intel-based Macs of that period.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Matching two fields in two csv files, create new file and append match

I am trying to parse two csv files and make a match in one column then print the entire file to a new file and append an additional column that gives description from the match to the new file. If a match is not made, I would like to add "NA" to the end of the file Command that Ive been using... (6 Replies)
Discussion started by: dis0wned
6 Replies

2. UNIX for Beginners Questions & Answers

How to count lines of CSV file where 2 fields match variables?

I'm trying to use awk to count the occurrences of two matching fields of a CSV file. For instance, for data that looks like this... Joe,Blue,Yes,No,High Mike,Blue,Yes,Yes,Low Joe,Red,No,No,Low Joe,Red,Yes,Yes,Low I've been trying to use code like this... countvar=`awk ' $2~/$color/... (4 Replies)
Discussion started by: nmoore2843
4 Replies

3. Shell Programming and Scripting

sed : replace Nth match in a file

I have a situation where a file "config.txt" looks like this Servername: OS: Serername: OS: Servername: OS: .... .... ... Servername: OS: looking for the sed syntax to replace the "Nth" occurrence of Servername (i would apply the same logic to OS as well), want to replace the Nth... (4 Replies)
Discussion started by: alldbest
4 Replies

4. Shell Programming and Scripting

Compare 2 files of csv file and match column data and create a new csv file of them

Hi, I am newbie in shell script. I need your help to solve my problem. Firstly, I have 2 files of csv and i want to compare of the contents then the output will be written in a new csv file. File1: SourceFile,DateTimeOriginal /home/intannf/foto/IMG_0713.JPG,2015:02:17 11:14:07... (8 Replies)
Discussion started by: refrain
8 Replies

5. Shell Programming and Scripting

Match columns from two csv files and update field in one of the csv file

Hi, I have a file of csv data, which looks like this: file1: 1AA,LGV_PONCEY_LES_ATHEE,1,\N,1,00020460E1,0,\N,\N,\N,\N,2,00.22335321,0.00466628 2BB,LES_POUGES_ASF,\N,200,200,00006298G1,0,\N,\N,\N,\N,1,00.30887539,0.00050312... (10 Replies)
Discussion started by: djoseph
10 Replies

6. Shell Programming and Scripting

Match list of strings in File A and compare with File B, C and write to a output file in CSV format

Hi Friends, I'm a great fan of this forum... it has helped me tone my skills in shell scripting. I have a challenge here, which I'm sure you guys would help me in achieving... File A has a list of job ids and I need to compare this with the File B (*.log) and File C (extend *.log) and copy... (6 Replies)
Discussion started by: asnandhakumar
6 Replies

7. Shell Programming and Scripting

search and replace in csv file

I have csv file where I want the second column has to be replaced with value 1. Source file 919568760477,1,2011-07-11T22:34:27.000+05:30, 919557735692,2,2011-07-11T22:36:16.000+05:30, 917417384969,2,2011-07-11T22:33:26.000+05:30, Final file ... (30 Replies)
Discussion started by: dondilip
30 Replies

8. Shell Programming and Scripting

How to replace match data in 2 file.

How to replace match data in 2 file. to new file My log.txt (100,000 line) 11415304503฿90255050001฿3฿23/02/2009 13:12:38฿17/04/2009 13:04:59฿27/03/2009 4:13:54 11494069063฿90259730001฿3฿27/10/2008 13:14:21฿02/11/2009 14:34:01฿09/10/2009 4:13:26 11497298316฿90825970008฿5฿29/03/2009... (5 Replies)
Discussion started by: ooilinlove
5 Replies

9. Shell Programming and Scripting

csv file to array, match field1, replace in flat file field1 to field2

Hello, i am bit stuck with making script for automatic procedure. Case: Two files. One is flat file, other is csv file. csv file has two column/fields with comma delimited data. Here is what i need (explained way) CSV file: field1 | field2 "hello","byebye" "hello2","byebye2"... (23 Replies)
Discussion started by: frankie_konin
23 Replies

10. Shell Programming and Scripting

replace a field in a CSV file

Hello all, I've a CSV file and need to replace 5th field if its value is "X". The exact requirement is to replace 5th field (column) with "Y" if a. it's value is "X" AND b. the line must start with ABC string i guess this can be done with awk. Pl help. For security reasons, the... (2 Replies)
Discussion started by: prvnrk
2 Replies

Featured Tech Videos