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Author: halfgaar

http://www.halfgaar.net/

Halfgaar is Wiebe. Wiebe is a contributing author on this weblog. He also has a lot of stuff (such as long, in-depth articles) on his personal website.

Wiebe works at YTEC, where he is a senior developer of customer-specific tailor-made software (“klantspecifieke maatwerk software“) for clients in a few select markets: wholesale, printing and healthcare.

Disabling exim port 25 listening when zimbra is installed

Edit: This doesn't work anymore I don't think, because more modern versions check for SMTP conflicts and don't allow this. Read More »

Zimbra has no shutdown init script on Debian and Ubuntu

There is a K01zimbra in rc6.d for reboot, but not in rc0.d. See this bug report I made. Read More »

Zimbra dependancy on ‘file’

Zimbra has a dependancy on 'file', which the installer file won't check for. It is also a WONTFIX bug, so beware: install file(1)! If you don't, mails get stuck in queue because amavisd won't run.

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Some links to read for getting into Atmel processors

A sort of bookmark: Dragonhide and absolute beginners guide.

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Getting electronic parts cheaply

A sort of bookmark: Futurlec and digikey.

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Find all manually installed packages on a Debian system

This should find all manually installed packages on a Debian system:

aptitude search '~i!~E' | grep -v "i A" | cut -d " " -f 4 Read More »

Enabling quota on a journalled ext3 file system on Debian

Source. And a source for non-journalled quotas. Read More »

Xen console name on different kernel versions

I've just been struggling to get a xen console working for Ubuntu 8.04 (hardy). By default, xen-create-image uses hvc0, but that's only since kernel 2.6.26 (don't know if that's only pv_ops or xen-patched). Hardy uses 2.6.24 and therefore it's xvc0. The xen-create-image command or xen-tools.conf config file therefore need a parameter serial_device=xvc0.

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Seek time benchmark for linux

This site provided a nice short c program to measure seek times. I would attach the file in case that site goes down, but this blog still has upload errors...

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Creating iSCSI target and initiator on Debian

This post is even more of a memory aid than normal; it's really only useful to me. Source. I assume Ubuntu is similar. Read More »