Compare 2 text file with 1 column in each file and write mismatch data to 3rd file


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Compare 2 text file with 1 column in each file and write mismatch data to 3rd file
# 8  
Old 11-04-2013
I need the missing data from file 1 alone...How can we do that..

Code:
cat file1
 
101250030067
101214200123
101214700333
109912312312


cat file2
101250030067
101214200123
101214700333
101214700300

File3 should be 109912312312 alone.
101214700300 is not needed.
ie. Missing data
# 9  
Old 11-04-2013
How about grep ?

Code:
grep -v -f file2 file1 > file3

It works for given sample input.
# 10  
Old 11-04-2013
As the 1st file contains 50000 lines, grep is taking too much time.
Can we have a better way.
# 11  
Old 11-04-2013
Try this:
Code:
awk 'NR==FNR{a[$1]=$1;next} { if (!a[$1]) { print $1 } } ' file2 file1

output:
Code:
109912312312

Code:
cat file2
101250030067
101214200123
101214700333
101214700300

Code:
cat file1
101250030067
101214200123
101214700333
109912312312


Last edited by greet_sed; 11-04-2013 at 09:46 AM.. Reason: format code tags with file names
This User Gave Thanks to greet_sed For This Post:
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Tee doesn't write all displayed data into text file

"Debain 9 - LXDE" I execute follow line in the bash terminal: /ts3/server/ts3server_startscript.sh start createinifile=1 | tee -a /ts3/server/key.txt The displayed output looks like follow: My key.txt file looks like follow: How can i save the whole displayed text in my file? Why does... (5 Replies)
Discussion started by: int3g3r
5 Replies

2. Shell Programming and Scripting

Column to row and position data in a text file

Hi everyone.. I have a list of values in a file... a, b, c, 1, 2, 3, aaaa, bbbbb, I am interested in converting this column to a row.. "text",aaaa, bbbb a,1 (7 Replies)
Discussion started by: manihi
7 Replies

3. Shell Programming and Scripting

Compare output of UNIX command and match data to text file

I am working on an outage script and I run a command from the command line which tells me the amount of generator failures in my market. The output of this command only gives me three digits to identify the site by. I have a master list of all sites in a separate file, call it list.txt. If my... (7 Replies)
Discussion started by: jbrass
7 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

Compare two files and write data to second file using awk

Hi Guys, I wanted to compare a delimited file and positional file, for a particular key files and if it matches then append the positional file with some data. Example: Delimited File -------------- Byer;Amy;NONE1;A5218257;E5218257 Byer;Amy;NONE1;A5218260;E5218260 Positional File... (3 Replies)
Discussion started by: Ajay Venkatesan
3 Replies

6. Shell Programming and Scripting

How to write text file data to excel using UNIX shell script?

Hi All, I have the requirement in unix shell script. I want to write the "ls -ltr" command out put to excel file as below. Input :text file data : drwxr-xr-x 5 root root 4096 Oct 2 12:26 drwxr-xr-x 2 apx aim 4096 Nov 29 18:40 drwxr-xr-x 5 root root 4096 Oct 2 12:26 drwxr-xr-x... (10 Replies)
Discussion started by: Balasankar
10 Replies

7. Shell Programming and Scripting

Count column data in a text file

I have a text file that has the following column data: 0.007 0.005 0.004 0.007 How do i output the total sum of the data above? (6 Replies)
Discussion started by: alegnagrp
6 Replies

8. 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

9. Shell Programming and Scripting

using awk to substitute data in a column delimited text file

using awk to substitute data in a column delimited text file hello i would like to use awk to do the following calculation from the following snippet. input file C;2390 ;CV BOUILLOTTE 2L 2FACES NERVUREES ;1.00 ;3552612239004;13417 ;25 ;50 ; 12;50000 ; ; ... (3 Replies)
Discussion started by: iindie
3 Replies

10. UNIX for Dummies Questions & Answers

write data into a text file in bold format

Hi, can anyone help to write data into a text file in bold format and rollback to actual format. Thanks, Regards, Milton Y. (1 Reply)
Discussion started by: miltony
1 Replies
Login or Register to Ask a Question