How to check the repetition values in a file using bourne shell


 
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# 1  
Old 04-07-2009
Question How to check the repeated values in a file using bourne shell

Hi all,

I have a scenario, like consider a file abc.txt,
inside abc.txt, the contents is
value1 = aaa,
value2 = bbb,
value3 = ccc,
value1 = ddd.

In this situation i need to throw an error for the repeatation of keys like "value1" is repeating twice.

how to handle this using bourne shell.
help me plz.

Regards,
NG

Last edited by Nandagopal; 04-07-2009 at 11:34 AM..
# 2  
Old 04-07-2009
If you have spaces around the equal sign:

Code:
awk 'a[$1]++' file

Regards
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