CSS: centering things
Here's how to center things:
- Centering lines of text
- Centering a block or image
- Centering vertically
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 …
Cloning Ubuntu 10.04 Server KVM guests efficiently
If you need to create lots of similar virtual machine guests running on QEMU/KVM, it is a very good idea to prepare a template guest image from which to clone the other guests. You should do whatever customizations you like before cloning. For instance I like to configure LVM …
Serial console for Ubuntu server 10.04 KVM guests
The virt-manager VNC screen is fine for LAN connections, and good for running graphical sessions. X is not installed on Ubuntu server by default, and VNC is really bad over slow links even for text console. I like to configure serial console for all my virtualized guests, because with it …
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 …
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
- Download these packages:
server:root>mkdir pware-samba server:root>cd pware-samba server:root>xargs wget -nd <<EOF http://pware.hvcc …
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 …
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 …
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 …
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 …