Hello world!!! Fibonacci distribution
Windows Command Prompt - 34, 8, 5 chars, (2 below)

*These ones may or may not be breaking rule 2, but here it is anyway

%~099


Name the file:

&amp;start call echo Hello world!!!&amp;exit -b .cmd




Now lets corrupt the file-system a little - 2 chars (or less if you want)

A1


Name the file (using your preferred unorthodox method):

"&amp;start call echo Hello world!!!&amp;exit&amp;.cmd


How does this work:

Since cmd scripts are invoked with 'cmd.exe /C "%1" %*' the executed command will be:

cmd.exe /C "c:\PATH_TO_THE_SCRIPT\"&amp;start call echo Hello world!!!&amp;exit&amp;.cmd"


which will in the following order:


Fail to execute "c:\PATH_TO_THE_SCRIPT\"
Open a new shell printing Hello world!\n
Exit the original shell