I have been trying to find a way to display on the web in a reasonable fashion a graph of ro blog’s connections. After trying various configurations with graphviz, tulip and other graph visualization software it was clear to me that there is no way to display a highly connected ~ 700 nodes graph in reasonable size image. The best I could hope after trying different layouts of the graph in tulip was something like this:...
One of the elements not clearly stated if reading the java multicast documentation and examples found on the net is that if you create a multicast receiver this will NOT listed to all available interfaces. Instead one must specify the desired interface because otherwise the MulticastSocket will only listen to the first active (default?) interface. Here is an example of code which specifies exactly the interface to listen to: import java....
My knowledge of Cisco is basic at best but having spent a few days configuring one I decided to write down some aspects, more for future reference than anything else. Configuring the interfaces The Cisco I was working on had several physical FastEthernet ports. The first 2 where used and I was supposed to configure the 3’rd: FastEthernet2. Setting an IP to the FastEthernet2 cannot be done directly but instead it is done by creating a Vlan....
I must recognize I use a lot of python scripting for various tasks. Some of them, just stopped working: First problem ./my_script.py<br></br> File "./my_script.py", line 53<br></br>SyntaxError: Non-ASCII character '\xc3' in file ./my_script.py on line 53, <br></br>but no encoding declared; see http://www.python.org/peps/pep-0263.html <br></br>for details The solution Just add the following at the beginning of the script #!/usr/bin/env python<br></br># -*- coding: UTF-8 -*- Second problem Traceback (most recent call last):<br></br> File "./my_script.py", line 8, in <module><br></br> locale....
Wireless support Ok, now there is an Ubuntu system installed on the old Dell Inspiron 8000. Only one thing remains: some kind of wireless support. So, to this end, I have bought an Edimax wireless usb stick: EW-7318Ug. Gutsy default By default Gutsy loads the rt73usb module when the usb stick is inserted but I was not able to use this configuration in order to connect to the wireless network even if I have tried various things....
I have 2 old Dell Inspiron 8000 laptops which even if they are around 6 years old still have some nice features: 1600×1200 screen resolution very good quality sound card compared to the one of my new D820 (maestro3 versus intel_hda) Both of them are running linux since a very long time but I wanted to install a fresh/clean new version on one of them in order to be used as a music, internet station at home since I am afraid that backpack carrying the D820 each day on a bicycle will finally prove fatal to it....
I would not normally write such an article but I came across the same question from different sources with the same wrong answer twice in the last week. The question was: I have bought a new wireless router and wish to connect my wireless laptop to the existing network? Obvious enough? Well not quite. First choice (complicated) What those asking me that question did was something similar to the following diagram:...
Awstats apt-get install awstats copy configuration files and cached data (old statistics) from old machine (the cached data will have to be copied once again exactly before moving to production) mkdir /var/cache/awstats ln -s /usr/share/doc/awstats/examples/awstats_buildstaticpages.pl apt-get install libgeo-ipfree-perl libgeo-ip-perl geoip-bin #(required for the geoip plugin for awstats) Build the stats files using: AWSTATS=/usr/lib/cgi-bin/awstats.pl $AWSTATS -config=nemesisit.ro -update awstats_buildstaticpages.pl -config=nemesisit.ro -dir=/data/www/data/analyze/awstats -awstatsprog=$AWSTATS Not so simple At first everything seemed ok and I was even dumb enough to not check the results in detail but after a while I realized they did not worked:...
DHCP Installing a dhcp server was quite simple. # apt-get install dhcp3-server Then I just had to modify the /etc/dhcp/dhcpd.conf the configuration file did not changed almost at all from the previous versions so I could just copy it with very small modifications. The only interesting thing in this file is how to make a server boot from the network: host X { #next-server X.X.X.1; #filename "/tftpboot/pxelinux.0"; hardware ethernet XX:XX:XX:XX:XX:XX; fixed-address X....
Asterisk migration from 1.2.13 to 1.4.10. Edited to Asterisk (it’s a bug’s life after reverting to 1.2.26) To the end the asterisk installation was a bit disappointing as I lost a lot of time for a stupid issue. I started optimistic with a: apt-get install asterisk and then with the migration/merging of the configuration files. My configuration was as following: IAX clients connecting to asterisk which forwards calls to a sip box connected to a phone line....