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How to refer both files in awk?

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# 1  
Old 05-22-2013
How to refer both files in awk?
Hi,

In the script below, how can I refer both the input files at the same time?

nawk '{print NR "-" FNR "-" FILENAME}' f1 f2

output:
Code:
1-1-f1
2-2-f1
3-3-f1
4-4-f1
5-1-f2
6-2-f2
7-3-f2

I want output like:

Code:
1-1-f1 f2
2-2-f1 f2
3-3-f1 f2
4-4-f1 f2
5-1-f2 f1
6-2-f2 f1
7-3-f2 f1

regards,
juzz4fun
# 2  
Old 05-22-2013
You need to store f1 into an array, then print array and f2 at the same time.
Look at NR==FNR
If you post content of f1, f2 and the goal, we may help you
# 3  
Old 05-22-2013
I really don't understand what you are trying to achieve!

But you can define the file names in a variable inside BEGIN block and do something like below to get your desired output:
Code:
awk 'BEGIN{F1="f1";F2="f2"}{print NR "-" FNR "-" FILENAME, (FILENAME==F1?F2:F1)}' f1 f2

This User Gave Thanks to Yoda For This Post:
juzz4fun
# 4  
Old 05-22-2013
The 2nd filename is unknown while the 1st file is processed!
You would need to pass it as another argument to awk.
# 5  
Old 05-22-2013
Quote:
Originally Posted by MadeInGermany
The 2nd filename is unknown while the 1st file is processed!
You would need to pass it as another argument to awk.
Not really.
The following should work:
Code:
nawk '{printf("%d-%d-%s %s\n",
        NF, FNR, ARGV[1 + (FNR!=NR)], ARGV[1 + (FNR==NR)])}' f1 f2

with a single pass through the files.
These 2 Users Gave Thanks to Don Cragun For This Post:
MadeInGermany Yoda
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