Awk to find duplicates in 2nd field


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# 1  
Awk to find duplicates in 2nd field

I want to find duplicates in file on 2nd field i wrote this code:
Code:
nawk '{a[$2]++} END{for i in a {if (a[i]>1) print}}' temp

Could not find whats wrong with this.
Appreciate help
# 2  
Quote:
Originally Posted by zenith
I want to find duplicates in file on 2nd field i wrote this code:
Code:
nawk '{a[$2]++} END{for i in a {if (a[i]>1) print}}' temp

Could not find whats wrong with this.
Appreciate help
Hint: what are trying to 'print'?
# 3  

Code:
awk '{++a[$2]==1}' temp

# 4  
Quote:
Originally Posted by vgersh99
Hint: what are trying to 'print'?

Code:
nawk '{a[$2]++} END{for i in a {if (a[i]>1) print a[i]}}' temp

i am trying to print contents of array
# 5  
Quote:
Originally Posted by zenith
Code:
nawk '{a[$2]++} END{for i in a {if (a[i]>1) print a[i]}}' temp

i am trying to print contents of array
Ah, now you are, but probably you meant to do this instead:
Code:
nawk '{a[$2]++} END{for (i in a) if (a[i]>1) print i}' temp

# 6  
Quote:
Originally Posted by vgersh99
Ah, now you are, but probably you meant to do this instead:
Code:
nawk '{a[$2]++} END{for (i in a) if (a[i]>1) print i}' temp

Thankyou
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