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Author Re: match pattern but print previous line
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2006-10-12, 6:57 pm
> Don't use the old version of awk.
>
> If on solaris, use nawk or /usr/xpg4/bin/awk.

oh.. thank you/ I am using solaris8 OS. It works as Ed suggested.

/usr/xpg4/bin/awk '{ gsub (/[0-9a-z][0-9a-z]/,"&:" );print }' /tmp/x
20:00:00:00:c9:3b:1c:dc:

Since it is a fixed length string, I can use cut to remove trailing ':'

Pad

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