Here is a one-liner that should do it, the command line options are explained in perlrun: 
perl -lne '/\tCM+(\d+)/; print $1 if defined $1 and not $seen{$1}++' f
+ile1 > file2

[download]

--
John.

In reply to Re: creating a new file with unique values by jmcnamara
in thread creating a new file with unique values by afasch01

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