. Meanwhile there are plenty of operating systems available for the Raspberry Pi - including an ARM version of the source-based Linux distro CRUX.

So if you like handcrafting or think Raspbian is "too mainstream", you can have a lot of fun with a SD card with at least 1 GB of memory and a pot of coffee. 😉 …

If you install and configure a Postfix mail server for relaying mails using an external smarthost you might be puzzled about the following error message:

1Mar 19 17:00:22 hostname01 postfix/smtp[2003]: warning: SASL authentication failure: No worthy mechs found

The reason for this issue can be really trivial - in my …

Hint: The following issue has been fixed by a RHEL / CentOS patch (util-linux-ng) - just update your system!

If you want to install Open Monitoring Distribution on RHEL or CentOS 6.4, you might have the problem that creating sites isn't working as expected:

1# omd create test
2Adding /omd/sites/test/tmp to /etc/fstab. …

Recently I had problems with installing Oracle 11gR2 Express Edition on CentOS 6.4.

The installation of the RPM package worked but the database configuration crash with the following error:

1# service oracle-xe configure
2...
3"Database Configuration failed.  Look into /u01/app/oracle/product/11.2.0/xe/config/log …

If you want to receive mails on your smartphone or tablet you have to choose between two completely different technologies:

• Polling - The mail server is contacted in a pre-configured timeframe (30 minutes, 1 hour,...) and asked for new messages
• Pushing - The mails servers informs the mobile device about about new …

Not everybody wants his contacts and calendar entries synchronized to the Google Cloud - I'm also one of those persons who prefer synchronizing sensitive data locally.

With HTC ROMs you can use HTC Sync for this - for me this have been the only reason why I used this ROMs for a long time.

But what to do if you don't …

Currently I'm implementing a IPSec tunnel between my and another flat. After my first plan, using an already existing Raspberry Pi as IPSec gateway, fizzled after plently of failed tries I decided to implement a router-to-router solution.

The center of my network is a ALIX.2D13 which is used as IPCop to offer DNS, NTP …

Sometimes it might be necessary to mount Linux file systems under Windows.

This can be done very easily using a tool named "DiskInternals Linux Reader". This tool is able to mount the following file system types in read-only mode:

• ext2/3/4
• reiserFS/reiser4
• HFS(+)
• UFS2

Be noticed that the tool only mounts …

Today Red Hat released the fourth update of Red Hat Enterprise Linux 6. After 8 months there's also another update that brings a lot of fixes and new features.

The Release Notes für RHEL 6.4 are, as usual, very considerably - I personally think, that the following updates are specially mentionable:

Kickstart

Using th …

Reading the World Wide Name (WWN) / World Wide Identifier (WWID) of a controller or a LUN is not always easy unter HP-UX - depending on the release. Especially under the older releases 11.11 and 11.23 additional tools are required to get the requested information - this is much easier under 11.31.

Controller …