linux
View/Copy Windows RAID0 array from Ubuntu Live CD
Fri, 01/02/2009 - 10:35 — John BowenI had a customer computer, which was running Windows XP Pro on a RAID 0 array (striping). There were twin 230GB hard drives, striped into a 460GB RAID0. Customer bought new 1 TB drives, and wanted them installed. This time, though, there would be no RAID, just one drive for the OS and programs, and one for the customer's data.
Small issue with eeePC dial-up over Palm Treo 755p
Fri, 12/05/2008 - 11:24 — John BowenIn a previous post, I wrote about setting up a tethered dial-up connection using a Palm Treo 755p and an eeePC.
It seems that during the upgrade process from Ubuntu 8.04 (Hardy) to 8.10 (Intrepid), something changed in the networking modules and broke this...a little bit.
Installing an APC UPS to support an Ubuntu server
Sun, 11/30/2008 - 11:02 — John BowenI just had an opportunity to install a new APC (Model BN1250LCD) UPS to support an Ubuntu Linux server. Configuration was really easy thanks to this post on the Ubuntu forums and this post in Ubuntu's Community Help documentation.
The only oddity I noticed was that after starting apcupsd, there was no notice in the /var/log/apcupsd.events of the successful start. No big deal, I guess...it still responds to /etc/init.d/apcupsd status with all the happy details of the UPS' condition.
Changing IP addresses in a Linux-run LAN
Mon, 09/22/2008 - 11:36 — John BowenI recently set up a Linux (Ubuntu) based network to allow VPN connectivity, and to avoid headaches1 I wanted to modify the internal IP address scheme from the default (192.168.1.0) scheme.
- 1. FWIW, the potential headache there is that if I'm on a friend's network, I've probably already been assigned an IP address from that segment (192.168.1.20, perhaps), so connecting to the VPN would cause problems with routing (because I'd have two IP addresses from the same segment, but from separate networks).
A Postfix open relay?? Who, me?
Fri, 08/08/2008 - 12:46 — John BowenEarlier this week, I started receiving emails (apparently) from the folks at junkemailfilter.com. Actually, the messages are from unmonitored accounts on their mail servers, but let's not split hairs. The point is, jef is passing rejected email messages 'back' to me...apparently they're seeing (and stopping) spam messages that originated on my own mail server.
It looks like the header entry that's earning me the warning is this one, and others like it:
Received:
Installing Ubuntu 8.04 (Hardy Heron) on the Asus eeePC
Mon, 07/07/2008 - 20:16 — John BowenAfter watching them for months, I bought an Asus 8GB eeePC from amazon.com. I want it for two main reasons:
Adding email accounts to Postfix without MySql
Tue, 04/29/2008 - 13:41 — John BowenI can never remember how to add users to Postfix, mostly because I don't have to do it often enough to commit it to memory. Here it is...hopefully I can remember where I wrote it down next time...
These instructions assume a new user named 'new_user'. Credit to falko and his post on howtoforge for part of this code.
Create the new Unix user, and assign him to the 'users' group
root@jupiter:/home# useradd -d /home/new_user -g users new_user
Fixing the available packages list in Ubuntu
Tue, 03/25/2008 - 15:17 — John BowenFor several months, by Ubuntu server has complained every time I do an apt-get upgrade, with the following message:
dpkg: serious warning: files list file for package `[package name]' missing, assuming package has no files currently installed
There were easily a hundred packages that listed this way, and I couldn't figure out how to resolve it. Today, I ran across this post on the Ubuntu forums, which suggested the following command:
sudo dpkg --clear-avail
Apache Virtual Hosting problems
Sat, 03/22/2008 - 20:52 — John BowenI thought I had a handle on setting up virtual hosts in Apache, but it looks like I knocked this site off the web for several days after reconfiguring my Subversion virtual host...oops. Back to the web to figure out what I'm doing wrong.
