Copy sparsebundle to disk on Linux

alx — Fri, 27 Mar 2015 09:00:45 +0000

I’ve figured out an pretty easy way to copy the contents of a OS X sparsebundle onto a whole disk on linux.
First go into the Image.sparsebundle directory and have a look at the Info.plist. You need the values for size and band-size.
Now in a shell enter:
for i in $(seq 0 $(({size}/{band-size}-1))) ; dd if=`printf "%x" $i` of={/dev/sdx} bs={band-size}c seek=$i ; done
All in one line and replace everything in curly braces with the desired value, e.g. “{band-size}” => “8388608”.

Zero-Mailer

alx — Mon, 07 Jun 2010 16:54:55 +0000

This Zero-Mailer is even less than a nullmailer. It is a sendmail replacement which (basic configuration) send all mails to a single email address (ignoring the destination address).

It’s desigend for servers, which are no mail servers, and only sends logs, notices and such things. So all other software (may be scripts, used from the web-server) have to use a SMTP server for outgoing mail (e.g. forum).

It can be configred that when sendmail is invoked by a user, that all those mails are going to another address. (the users which calls sendmail is important, not the destination).

example configuration:
[default] to = "destination@address" from = "sender@address" subject = "[Server] [To: %TO%] %SUBJECT%"

You can add more entries in that form, which usernames instead of “default”, in that case all mails sent by that user will be send to the specified address.

The options in detail:

disabled, optional, defaults to false, if true no mail will be sent (for that user)
to, required, the destination
host, optional, the destination host, if omitted the MX record of the to address will be used
subject, optional, the subject, defaults to “%SUBJECT%” (placeholders: %SUBJECT% the original subject, %TO% the list of original recipients)
from optional, the sender address, default to “user@hostname”

Files:

/etc/zeromail.conf
/usr/sbin/sendmail

You may have problems after uninstalling all MTA software, because some software (e.g. logcheck) requires an installed MTA. I’ve fixed that problem by installing an dummy deb-package, which (says that it) provides an MTA.

This is the way I’m using it on my server and a proof of concept.

Some more explanations in the source.

Download:

zeromailer 0.3 (7.2 KiB, 15. June 2010)

ALeX Kazik » Linux

Copy sparsebundle to disk on Linux

Zero-Mailer