Compare content between two files


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# 1  
Lightbulb Compare content between two files

I have two files in unix environment with similer type of contain:

Example:
File1 File2
Code:
Milestone1                              Milestone1
Milestone2                              Milestone12
Milestone3                              Milestone13
Milestone4                              Milestone14
Milestone5                              Milestone5
Milestone6                              Milestone16

I need to compare these two files (File1 and File2), and create output to a different file (say File3) informing

There are 2 name matching.
Names are:
Code:
Milestone1
Milestone5

Please help me with resolution. I need unix script to complete the job. I am stuck in between it for a long timeSmilie
# 2  
Hi, try:
Code:
grep -xFf file1 file2

This User Gave Thanks to Scrutinizer For This Post:
# 3  
Hi Scrutinizer, thanks , but it does not give me an output to a new file informing how many matching records and what are the matching data. I am working with huge number of data (nearly 900000 lines of data), it required to fetch out the numbers and the data which is matching in two files. Smilie
# 4  
You would need to redirect the output:
Code:
grep -xFf file1 file2 > file3

An alternative would be:
Code:
awk 'NR==FNR{A[$1]; next}$1 in A' file1 file2 > file3

This User Gave Thanks to Scrutinizer For This Post:
# 5  
Thanks
I have run the code, It does not give me any error message and successfully executed and new file created, but it does not fetch any data. Smilie

i run both the codes. Sorry I am really novice in this area and keep asking "may be very basic" questions and tricks.

Last edited by Mrinal Mondal; 12-14-2012 at 03:43 PM..
# 6  
Could you post an anonimized representative sample of both files?
# 7  
Sure. I have posted on my query details.

Suppose I have two files File1: it contain some name like Milestone1, Milestone2, Milestone3, Milestone4, Milestone5, Milestone6. File2: it contain some files like Milestone12, Milestone13, Milestone14, Milestone5, Milestone16.

I need to get output to another file as:

There are 2 file matching and these files are:
Milestone1
Milestone5

Last edited by Mrinal Mondal; 12-14-2012 at 04:30 PM..
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