[Centos] *very* raw script for a new email server
rsweet at aoes.com
Wed Dec 8 15:34:49 UTC 2004
On Wed, 8 Dec 2004, Benjamin J. Weiss wrote:
> I'm putting up a new email server, but I can't afford downtime when I
> switch servers. So, I've been writing a script that will take a CentOS
> install and turn it into a secure email server with Spam Assassin,
> Amavis-new, ClamAV and external relay using SASL authentication.
> The script is still *very* raw, and I'm relatively new to bash script
> writing. I still have some areas of work to do:
If you are new to bash, or programming in general, I think you might find
learning python is more specifically suited to the task, and more powerful.
However bash can work quite nicely for a lot of things ;-)
> - I need to figure out how to automate the certificate generation. Right
> now I still have to type in a password at the prompt, as well as hit
> <enter> to accept the defaults
have you looked at "expect"? It is designed for this sort of operation.
There are modules for python or perl both, and I imagine you could also get it
to work from the shell. We have scripts for apache ssl cert generation that
> - Some of my sed commands are kludgy. I'm still learning the ins and outs
> of sed
If you are doing search/replace filters, many sed commands can be replaced
from the shell with perl's re interpreter by doing:
perl -pi.orig -e 's/search-this/replace-with-this/' filename
which is more overhead, buts lets you make a backup file (named
filename.orig), and gives you the power of perl's re engine, which is arguably
more forgiving in syntax than sed.
> - I have *no* idea whether or not Vipul's Razor is working or not.
> - I need to fix the yum "extras" section.
> - I need to improve the iptables handling.
> Anyway, if you guys'd like to take a look and make comments, I'm open to
> suggestions and whatnot.
> It's at:
> CentOS mailing list
> CentOS at caosity.org
Ryan Sweet <ryan.sweet at aoes.com>
Advanced Operations and Engineering Services
AOES Group BV http://www.aoes.com
Phone +31(0)71 5795521 Fax +31(0)71572 1277
More information about the CentOS