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How to ouput not in file2 using awk?

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# 1  
Old 06-27-2014
How to ouput not in file2 using awk?
Hi All,

Seeking for your assistance on how to ouput the file which is not match in file 1 and file 2 using awk. I tried NR=FNR but it's not working, it will only show the match record.

Code:
Ex.

File1
abc 
def
ghi

File2
23a
gd
abc

Output:
abc

i tried this code but it's not working
awk 'NR==FNR{a[$1];next}$1 not in a{print $0}' file1 file2

Please advise,
Thanks,
-nik
# 2  
Old 06-27-2014
Close. Try:
Code:
awk 'NR==FNR{a[$1];next}!($1 in a){print $0}' file1 file2

This User Gave Thanks to Don Cragun For This Post:
Kibou
# 3  
Old 06-27-2014
Thanks Sir Don Cragun.
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