I shoved your head in a mailbox.
There is no traditional 'execute' command in Unix.
It is possible to use BSD software on Unix systems. It is possible but many do not and they use other softwares on Unix systems beside the BSD software.
The mailbox regulations for Texas are the same as in most states. You must have a mailbox pertaining to your address and it's use must coordinate with the post office's terms of use.
Unix can be used on a large number of mainframes, servers, and workstations. If you would like to use a certified UNIX system on commodity hardware, Solaris 10 can be downloaded free of charge for non-commercial use.
My friends use My Earthlink Mailbox. Where can I learn what this program is all about?
Yes, quite a bit of companies and users use unix.
Our mailbox is on a rural route so we have a postman who drives to our mailbox.
You should be able to download the Unix Services for Windows, version 3.5, from Microsoft (free). There are other shell emulators that are available for Windows, which would allow you to use Unix type shell scripting without installing any additional OS. Your question about "virtual UNIX" is unclear ..
Yes you can. Unix understands both FAT32 and NTFS file systems.
If the mailbox is mounted on the house he must have a clear path to the mailbox. If you are mounting your mailbox on a rural road, mount it so the bottom of the mailbox is 47 inches from the surface of the road. Mount the mailbox far enough off the side of the road where it won't get hit. 12" is a good figure to use. Remember that school buses and trucks have mirrors that stick out on the right side that could hit your mailbox. If your mailbox is on a street with a curb, mount the mailbox so the bottom of the mailbox is 47" from the street. Mount the front of the mailbox 9" from the curb.
There is a product out there called Bird-Deter that is specifically designed for use on a mailbox. It is a very simple design but it keeps birds off of a mailbox with harming them in any way.