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Using awk to get columns from different files

 
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Top Forums UNIX for Dummies Questions & Answers Using awk to get columns from different files
# 1  
Old 05-20-2009
Using awk to get columns from different files
How can I use awk to create a new file that has 2 columns, each colums comes form a different file.
example:
I need column 3 from file1 and column 5 from file2 to make file3.
# 2  
Old 05-20-2009
Code:
nawk 'FNR==NR {a[FNR]=$3;next} { print a[FNR], $5}' file1 file2 > file3

# 3  
Old 11-10-2009
I am trying to apply this to be able to multiply a column of a file with the column of another file... any idea on how to do it?
# 4  
Old 11-11-2009
Quote:
Originally Posted by cosmologist
I am trying to apply this to be able to multiply a column of a file with the column of another file... any idea on how to do it?
Just a wild guess:
Code:
nawk 'FNR==NR {a[FNR]=$3;next} { print a[FNR] * $5}' file1 file2 > file3

 
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