On 25/05/16 15:24, Julian H. Stacey wrote:
Hi, Reference:
From: "Ruud H.G. van Tol" <rvtol(_at_)isolution(_dot_)nl>
Date: Wed, 25 May 2016 09:38:44 +0200
"Ruud H.G. van Tol" wrote:
On 2016-05-25 08:12, Xu Wang wrote:
Hi how can I efficiently extract the last email in a huge mbox email file?
If you need this more than once, I would switch to maildir first.
It was Xu's word "efficiently" that put me off replying earlier:
- efficient in reducing cpu processor time ? Or run time ?
- efficient in minimising transient max disc used ? Or
- efficient in human time ?
not searching new tools or reading manuals if for a one off job
& a solution already known, even if cludgy ?
I'd cludge it with my
http://berklix.com/~jhs/src/bsd/jhs/bin/public/mailsplit/
& if the mbox was truly monstrous & I was about to run out of space, either:
- first dd toward the end of mega mbox.
- or periodically delete numerous output files, either:
- by suspending job
- or using another xterm in same dir.
What I do for splitting:
1) cat little.rc
:0
mydir/
2) formail -s procmail ./little.rc < theBigBox
But, maybe your program is faster?
--udi
There'll be other more efficient solutions ;-)
Cheers,
Julian
--
Julian Stacey, BSD Linux Unix Sys Eng Consultant Munich http://berklix.eu/jhs/
Mail plain text, No quoted-printable, HTML, base64, MS.doc.
Prefix old lines '> ' Reply below old, like play script. Break lines by 80.
Britain denies 700,000+ Brits in EU a vote. http://www.berklix.eu/brexit/
____________________________________________________________
procmail mailing list Procmail homepage: http://www.procmail.org/
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)de
http://mailman.rwth-aachen.de/mailman/listinfo/procmail
____________________________________________________________
procmail mailing list Procmail homepage: http://www.procmail.org/
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)de
http://mailman.rwth-aachen.de/mailman/listinfo/procmail