WOW General Commands

/cast

Allows you to cast spells by name. Type /cast (spell subtext)
Example: "/cast Fireball (Rank 1)".
To add spell casting to a macro you can type it manually or shift-click a spell in your spell book to add the proper /cast line to the macro.

/em [message]

Creates an emote.
Alias:
/me

/exit

Quit the Game

/follow

Target a player and type this. You will follow that player.
Alias:
/f

/logout

Log out of the game.

/invite [player]

Invite a player to your party.
Alias:
/inv

/party [message]

Sends a message to party chat
Alias:
/p

/played

Reports the amount of time you've played the game with that character.

/pvp

Enable your character to be attacked by other players in Player vs. Player combat.

/r

Reply to the last tell/private message. You can scroll through all the people that whispered you recently by typing on the tab key.

/random [X] {Y}

Generates a random number between X and Y, if Y isn't specified, then it will generate a number between 1 and X. This is very useful to determine who's going to have the right to loot a chest or harvest a resource.

/say [message]

Send a message to people near you
Alias:
/s

/sit

When standing, your character will sit. Your character regains health more quickly when sitting.

/stand

When sitting, your character will stand.

/tell [player] [message]

Send a player a private message. You can scroll through all the people that whispered you recently by typing on the tab key.
Alias:
/t [player] [message]

/w [player] [message]

Send a player a private message. You can scroll through all the people that whispered you recently by typing on the tab key.

/who

Lists the players online.

/yell [message]

Yells a message to the area around. Many players consider this to be "spam" so use it sparingly.
Alias:
/y