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From: zorn@cutter.lbl.gov (Manfred D. Zorn)
Newsgroups: comp.mail.mh
Subject: Re: FAQ and convertion from unix-mail to mh
Message-ID: <8113@dog.ee.lbl.gov>
Date: 15 Nov 90 23:25:30 GMT
References: <FELIX.90Nov14102803@cayucos.ai.sri.com> <9011150438.AA01694@bacchus.eng.umd.edu>
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Reply-To: zorn@cutter.lbl.gov (Manfred D. Zorn)
Organization: Human Genome Center at LBL
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X-Local-Date: Thu, 15 Nov 90 15:25:30 PST

In article <9011150438.AA01694@bacchus.eng.umd.edu>, ziegast@ENG.UMD.EDU
(Eric Ziegast) writes:
|> 
|> The command inc(1) will INCorperate your unix-mail in MH folders.
|> If you want, you can even specify different names for each folder:
|> 
|> 	inc +mh-folder1 -file unixmail-folder-1
|> 	inc +mh-folder2 -file unixmail-folder-2
|> 

At least on our system inc does not do what Eric suggested.
inc expects individual messages separated by 4 Cntrl-A s.
But with a little gawk script you can scan through your old mail file
and generate perfect MH "single-message-in-a-single-file" files.

|> As for MH --> unix-mail, there is no standard way to convert them back.
|> But, a few times people responded with some awk scripts that'll convert
|> the messages back to BSD Mail format.  I looked through some old print-
|> outs of this newsgroup and couldn't find them.  Could someone repost
|> the solution?
|> 

This conversion is somewhat easier since MH provides 
		packf
to pack MH files in a folder into a single file. See documentation for details.
Of course you must get rid of the 4 Cntrl-A that packf inserts in
between the messages.
But that's straightforward.

Following are 2 awk scripts:
---------------------------------------------------
# needs gawk because awk allows only 10 open files
# to unpack mail files into separate files for mh
#                               M. Zorn 1990-11-08
BEGIN   { FILE = 0
        }
/^From / { close(FILE);
        FILE++
        }
        { print > FILE
        }
---------------------------------------------------
your outgoing mail does not have a date line ( at least mine)
to translate to MH it needs the date. You can get it from the "From" line:

#  add date line to old mail
/From / {print
                 printf("Date:     %s %s %s %s %s \n",$3, $4, $5, $6, $7)
                 }
!/From / {print}
---------------------------------------------------