Ubuntu Linux howto

Here is a small collection of useful commands that can ease your life a lot :)
I will try to update this post frequently.

Using git to track configs in /etc directory

Sometimes you may experience problems with configuration files, especially when you edit them manually ;)

It's generally a good habbit to keep track of all these changes, for example using git or svn. Git is more comfortable for me.

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Using RAW Sockets under Linux

Here is a small demo of raw sockets under Linux.
This will send an ICMP ping over network and wait for response.