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Comparing two files in UNIX and create a new file similar to equi join

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Top Forums Shell Programming and Scripting Comparing two files in UNIX and create a new file similar to equi join
# 8  
Old 02-05-2015
Hi Satece,

Actually your code in #5 looks fine, I just posted another way to do so, please do check your input file once again.
# 9  
Old 02-05-2015
Hi Akshay,

Checked the code you posted, Surprisingly it is giving out the 3 rows as output. I am not sure how awk exactly works. Please suggest.
# 10  
Old 02-05-2015
I also cannot reproduce the 3 line output. With the given sample, I tried with the code in #5 and with Akshay's :
Code:
awk -F, 'FNR==NR{A[$2,$3]=$0; next}($1,$2) in A' file2 file1

And both produced:
Code:
a1,b1,1
a2,b2,2

Are you sure your file is the same as the sample that you posted?
What version of awk are you using and what OS?
# 11  
Old 02-06-2015
Hi Akshay, Scrutinizer,

I created the files again. It is working fine for the both awk statements. Thanks for the help. Do we need to have same number of records in both the files to use this command?

Thanks
# 12  
Old 02-06-2015
Hi, Satece, no that is not necessary. The files do not need to have the same number of records.
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