In the Internet Relay Chat client mIRC and Pidgin, entering the undocumented command "/xyzzy" will display the response "Nothing happens". Within the low-traffic Usenet newsgroup alt.xyzzy, the word is used for test messages, to which other readers (if there are any) customarily respond, "Nothing happens" as a note that the test message was successfully received. Since regaining ownership of the Coraid software, the command is being returned to the system and now, in VSX release 8, the response is ">Foof!<< You are in a debris room."
There are files here." The new California Coraid management made the developers change the string to "/exportmode" and get rid of the "Foof!" message. It would announce "Foof! You are in a directory. Īccording to Brantley Coile, the Cisco PIX firewall had a xyzzy command that simply said "Nothing happens." He also put the command into the Coraid VSX to escape the CLI and get into the shell. When booting a Cr-48 from developer mode, when the screen displays the "sad laptop" image, typing "xyzzy" produces a joke Blue Screen of Death. Xyzzy by itself would print the status of the last "xyzzy on" or "xyzzy off" command. Early versions of Zenith Z-DOS (a re-branded variant of MS-DOS 1.25) had the command "xyzzy" which took a parameter of "on" or "off". On several computer systems from Sun Microsystems, the command "xyzzy" is used to enter the interactive shell of the U-Boot bootloader. The 32-bit version, AOS/VS, would respond "Twice as much happens". Xyzzy has been implemented as an undocumented no-op command on several operating systems in the 16-bit version of Data General's AOS, for example, it would typically respond "Nothing happens", just as the game did if the magic was invoked at the wrong spot or before a player had performed the action that enabled the word. Will Crowther, the author of Colossal Cave Adventure, states that he was unaware of the mnemonic, and that he "made it up from whole cloth" when writing the game. According to Ron Hunsinger, the sequence of letters "XYZZY" has been used as a mnemonic to remember the process for computing cross products. The origin of the word "xyzzy" has been the subject of debate. As Colossal Cave Adventure was both one of the first adventure games and one of the first interactive fiction pieces, hundreds of later interactive fiction games included responses to the command "xyzzy" in tribute. By typing "xyzzy" at the appropriate time, the player could move instantly between two otherwise distant points. Modern usage is primarily from one of the earliest computer games, Colossal Cave Adventure, in which the idea is to explore a cave with many rooms, collecting the treasures found there. Xyzzy comes from the Colossal Cave Adventure computer game, where it is the first " magic string" that most players encounter (others include "plugh" and "plover"). In computing, Xyzzy is sometimes used as a metasyntactic variable or as a video game cheat code. For other uses, see Xyzzy (disambiguation).
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