Re: need help parsing Received-SPF header

moody wrote:

Please don't top-post. Fixed below.

On Oct 18, 2:17 am, calm...@xxxxxxxxx wrote:

Using sed or awk or another such shell tool, how can I extract only the
email address from a "Received-SPF" header in a mail message?

Seehttp://www.openspf.org/newheader.htmlfor examples of what this
header looks like.

You MAY want to post a small sample input and expected output here rather than asking people to go look at some URL.

As you can see, the email address
(myn...@xxxxxxxxxxx) appears in different parts of the header and is
bounded sometimes by a character like ":" or ")" and sometimes by just
whitespace. Seems like a pretty challenging regex to me to get right.
Can anyone help?


What output you exactly want from the resulting email headers, I
suppose you want only the line containing/begining with Received-SPF
u might consider this


awk '/Received-SPF/ { print $0 } '

If that does what the OP wants, it can be written as just:

awk '/Received-SPF/'

since printing $0 is awks default action on a true condition.

Ed.
.

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