/op <name> Macht einen Player zu OP.

/deop <name> Nimmt einem Player OP wieder weg.

/kick <name> Kickt einen Player.

/ban <name> Bannt einen Player.

/unban <name> Nimmt den Bann von einem Player.

/give <player> <item> [num] - give the named player num’s worth of the item
number. If "num" is not specified, one is given.

/help - lists commands available, same as /?.

/home - move self to original spawn point.

/kick <player> - forces the player with the typed name to disconnect from the server.

/list - displays a list of connected players in your chatlog

/op <player> - makes the player with the typed name an Op. Inverse is /deop.

/pardon <player> - removes the /ban on the player with the typed name, allowing them to reenter the server.

/pardon-ip <ip> - pardon the /ban-ip location.

/save-all - forces a map save.

/save-off - turns off auto-save.

/save-on - turns on auto-save.

/say <message> - broadcasts a message to all players.

/setspawn - sets current location to the spawn point. Deprecated?

/stop - gracefully stops the server.

/tell <player> <message> - sends a private message to a player.

/tp <player1> <player2> - moves one player to the same location as another player, e.g., "/tp klaus hans" <- teleport klaus to hans.

/time set/add for day-/nighttime - Add to or set the world time. Amount may be a number between 0 and 24000, inclusive, where 0 is dawn and 12000 is dusk (i.e. clock is bisected; left side is night, right side is day).

http://www.minecraftwiki.net/wiki/SMP_Server_commands