Here's a neat little experiment. If you're sitting at a dual-boot machine with Windows and Linux installed, mount your Windows partition and search for strings (that is, ascii text) in file ftp.exe - for example:
root@sonic# mount /windows
root@sonic# cd /windows/WINDOWS/system32#
root@sonic:/windows/WINDOWS/system32# strings ftp.exe | grep California
@(#) Copyright (c) 1983 The Regents of the University of California.
Yes, you are reading that correctly - Microsoft's ftp program contains a copyright notice from the University of California. This is not because Microsoft has bought the University of California (not yet, anyway), but rather because the code in ftp.exe was copied from BSD. Copyright (C) 2004 Robert Storey, http://www.distrowatch.com/dwres.php?resource=review-freebsd
root@sonic# mount /windows
root@sonic# cd /windows/WINDOWS/system32#
root@sonic:/windows/WINDOWS/system32# strings ftp.exe | grep California
@(#) Copyright (c) 1983 The Regents of the University of California.
Yes, you are reading that correctly - Microsoft's ftp program contains a copyright notice from the University of California. This is not because Microsoft has bought the University of California (not yet, anyway), but rather because the code in ftp.exe was copied from BSD. Copyright (C) 2004 Robert Storey, http://www.distrowatch.com/dwres.php?resource=review-freebsd