Mikko Kortelainen

Hello again, world!

I'm just trying to get my old blog back online after neglecting it for a couple of years. And a disk crash. And no MySQL dumps, of course. Luckily I had the MyISAM data files so I was able to salvage most of it. Lot's of stuff not working yet …

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N900 Scandinavic Letters from US keyboard

My Nokia N900 has the US keyboard with four arrow keys but no diacritics, two of which are used in my native Finnish language. I actually like having the four arrow keys instead of two arrow keys plus dedicated diacritics. You can anyway get those from the on-screen keyboard, but …

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Samba on AIX 5.3

Here are instructions on how to get the pware Samba running on AIX 5.3.

1. Install these packages from the AIX installation CD:
- ldap.client.rte
- ldap.client.adt
  1. Download these packages:
server:root>mkdir pware-samba
server:root>cd pware-samba
server:root>xargs wget -nd <<EOF http://pware.hvcc …
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NIC bonding with Red Hat/CentOS

Here are simple instructions on how to configure network interface bonding on Red Hat based distros. The thing I always forget. There's also a little script which will create a bonding interface bond0 between eth0 and eth1 and migrate existing IP settings from eth0. You can find it in the …
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Redundant iSCSI storage for Linux

Here's how to set up relatively cheap redundant iSCSI storage on Linux. The redundancy is achieved using LVM mirroring, and the storage servers consist of commodity hardware, running the OpenFiler Linux distribution, which expose their disks to the clients using iSCSI over Ethernet. The servers are completely separate entities, and …

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Differential Xcopy parameters

I always forget what the correct options for the Windows xcopy command are when I simply want to synchronize one directory over another one, so that only changed files are overwritten. To do it well, you need to remember too many options. And robocopy is never installed when you need …

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OpenSSH public key authentication

First, create a key-pair with ssh-keygen. This is a one-time operation.

ssh-keygen -t dsa

It is good practice to enter a good password, but you may also leave the password empty. That will leave your private key vulnerable to local attacks, but if you need to login somewhere from a …

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