The Computer Tips Tricks Tutorials And Its Related Technology Are Spread In Many Different Websites.
All These Technology Are Dicussed Here.
debtree allows you to generate graphs using graphviz.
First checkout code from the source repository todo that execute following command.
git clone git://git.debian.org/~fjp/debtree.git
Now cd into the directory debtree. And execute following commands to generate sample graph
./debtree dpkg > out.dot
dot -T png -o out.png out.dot
gnome-open out.png
Enjoy the dependency graphs.
Did you wait like 10 seconds to ssh into another machine which is just within one feet ?, Well the problem seems to be ssh authentication requires a time consuming DNS lookup.
Fix for this problem is to disable DNS lookup during authentication. Follow steps below to fix this. Open up the file /etc/ssh/sshd_config file as root user and append the following line to it.
UseDNS no
Save the file and exit the editor.Now restart ssh service by executing following command.
sudo /etc/init.d/ssh restart
From now on your ssh logins should work like a breeze.
