sup talk - Jul 2009 - Backups ?

Hi, I''d like to setup an automatic backup system cause I don''t
want to
tag my mails twice and I don''t want to loose the information about
archived mails etc.

What do you think about something like this?
Is it enough to keep 4 dumps?
What about moving this code into sup shutdown?
I think everyone wants to have this feature?

run_sup(){
  # untested draft
  local dump_dir="/var"
  sup
  sup-dump | bzip2 > "$dump_dir/sup-dumps-`date`"
  ls -1t "$dump_dir"/sup-dumps-* | { read; read; read; read; cat } |
xargs rm
}

Marc Weber

Quoting Marc Weber <marco-oweber at gmx.de>:
>   ls -1t "$dump_dir"/sup-dumps-* | { read; read; read; read; cat
} | xargs rm
"{ read; read; read; read; cat }" could probably better be done as  
"tail +5"; makes it easier to adjust to people''s choice of
backup
count, too. ;-)
- Daniel "Bikeshedder" Wagner

Excerpts from wagnerdm''s message of Tue Jul 07 11:26:35 -0400
2009:
> >   ls -1t "$dump_dir"/sup-dumps-* | { read; read; read; read;
cat } | xargs rm
> 
> "{ read; read; read; read; cat }" could probably better be done
as
> "tail +5"; makes it easier to adjust to people''s choice
of backup

Or:

DAYS=5
find $dump_dir -mtime +${DAYS} -name "*sup-dumps-*" -print0 | xargs -0
--no-run-if-empty rm

(adjust xargs options to suit your environment...I don''t think
--no-run-if-empty is all that portable.)

-Ben
-- 
Ben Walton
Systems Programmer - CHASS
University of Toronto
C:416.407.5610 | W:416.978.4302

GPG Key Id: 8E89F6D2; Key Server: pgp.mit.edu
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Excerpts from wagnerdm''s message of Tue Jul 07 17:26:35 +0200
2009:
> Quoting Marc Weber <marco-oweber at gmx.de>:
> 
> >   ls -1t "$dump_dir"/sup-dumps-* | { read; read; read; read;
cat } | xargs rm
> 
> "{ read; read; read; read; cat }" could probably better be done
as
> "tail +5"; makes it easier to adjust to people''s choice
of backup
> count, too. ;-)
> - Daniel "Bikeshedder" Wagner
"tail -n+5", which is POSIX compatible

-- 
Exherbo KDE, X.org maintainer