Download the splunk install package.
Run the installation on a x64 ubuntu/debian virtual machine.
$ dpkg -i splunk*.deb
After the installation the path will be /opt/splunk/
To run splunk for the first time
$ sudo /opt/splunk/bin/splunk start
Accept the license agreement. Hit Enter for one line at a time, or spacebar to pagedown.
After the you accept the licensing agreement splunk will be available at
http://127.0.0.1:8000 and http://yourmachinename:8000
Enjoy.