'Tips n’ Tricks' Category
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PPTP VPN on Ubuntu 10.04 for your iPhone / iPad
August 30, 2010Below are the steps necessary to connect your iPhone / iPad or any other computer via a PPTP VPN. Why would I want to do this? For various reasons such as allow you to access information and servers that are behind a firewall, or maybe you just need to route traffic through different servers. I’ve [...]
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Varnish High, Ever increasing CPU usage workaround
May 26, 2010If you are using Varnish version >= 2.1 and experiencing an ever increasing CPU usage up to a point where you need to restart the service to force CPU usage to drop you may want to add the “-h classic” argument to the command line. This will revert to use the older hashing method instead [...]
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Disco Tip – Crunching web server logs
March 21, 2010At my day job we use Disco, a Python + Erlang based Map-Reduce framework, to crunch our web servers and application logs to generate useful data. Each web server log file per day is a couple of GB of data which can amount to a lot of log data that needs to be processed on a daily. [...]
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Ubuntu 9.10 Karmic Koala and ies4linux – Installation
December 30, 2009Installing ies4linux on Ubuntu 9.10 Karmic Koala by just running “./ies4linux” might show some warnings such as: IEs4Linux 2 is developed to be used with recent Wine versions (0.9.x). It seems that you are using an old version. It’s recommended that you update your wine to the latest version (Go to: winehq.com). In my case [...]
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Google AppEngine – Python – issubclass() arg 1 must be a class
September 14, 2009If you are getting the error “”issubclass() arg 1 must be a class”” with Google App Engine SDK for Python on Linux its probably because you are running Python 2.6 (and will probably happen to you when you run Ubuntu 9.04 – 2.6 is the default there). Just run the dev server under python 2.5 [...]
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Error: “Operation could not be completed (error 0x000006d1)” when adding a Samba based network printer to Vista
January 20, 2009If you are getting the following error while adding a Samba based network printer to Vista: Windows cannot connect to the printer. Operation could not be completed (error 0x000006d1). And you have a Samba server (version 3.0 and above) consider using the following technique to add the printer: Add a local printer (not a network [...]
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“Unable to retrieve MSN Address Book” on Pidgin on Ubuntu / Debian?
January 12, 2009Today I got the following error on Pidgin (I’m running version 2.5.2 on Ubuntu 8.10 Intrepid Ibex) while it tried to connect to MSN: “Unable to retrieve MSN Address Book” After searching a bit I found this post by Gijs Nelissen which said to use a different MSN plugin for Pidgin called msn-pecan. I’ll reiterate [...]
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Failed to run /usr/sbin/synaptic Unable to copy the user’s Xauthorisation file
April 27, 2008If you get the following error while running Synaptic: Failed to run /usr/sbin/synaptic Unable to copy the user’s Xauthorisation file. Make sure to that you have enough space in your /tmp directory. To check if that is indeed the problem run the following command in your terminal: df -h This command will show you each [...]
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VmWare Server 1.0.4 on Ubuntu Server 7.04 (a.k.a Feisty Fawn)
September 20, 20072 days after my previous post about installing VmWare Server 1.0.3 from Canonical’s repository, VmWare released version 1.0.4. I tried using its built-in install script on a vanilla Ubuntu Server 7.04 (a.k.a Feisty Fawn) and it worked flawlessly. Aside from certain libraries which it needs to compile the vmmon and vmnet kernel modules (the installation [...]
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Ubuntu Feisty Fawn (7.04), VmWare Server and Authentication problems
September 16, 2007If you are going to install VmWare server (a great and free server virtualization product from VmWare) on Ubuntu Feisty Fawn (7.04) and you’ve followed this post showing how to do it using Canonical’s commercial repository, make sure to read this post at the Ubuntu Community Docs. Basically, if you encounter authentication problems at the [...]
