This list was pulled directly from the Antrix r77 sources (src/game/chat.cpp). The command descriptions are (almost) exactly as they appear in that file, except more user-friendly.
GM commands can be executed either with the ! or . character. e.g., !kill and .kill have the same effect.
MaNGOS users will be familiar with the concept of the command table -- a good number of these commands cannot be executed themselves; they must be done through their "parent" command. For example: you do not type .gold 7000, you would type .modify gold 7000. Similarly, you would type .battleground leave instead of .leave to use the 'leave' command under the '.battleground' set.
Let me repeat: If a command under a certain heading is not working by itself, the first thing you should try is looking for the "Main [type] command table" under that command's heading in this list.
To enable all GM abilities, set your GM flags to ‘az’ in your accounts table (thanks elmis!). This is not necessarily recommended! To enable sub-sets of these abilities, use the appropriate letters, enclosed in brackets next to each heading.
For instance, setting the flags to 'egpt' would make a GM who can only answer Tickets and administrate the [Only registered and activated users can see links. ].
Banstick Commands [b]
banchar: Bans character x with or without reason
unbanchar: Unbans character x
kick: Kicks player from server
paralyze: Roots/Paralyzes the target.
unparalyze: Unroots/Unparalyzes the target.
Chat Control [c]
allowwhispers: Allows whispers from player <s> while in gmon mode.
blockwhispers: Blocks whispers from player <s> while in gmon mode.
Debug Commands [d]
debug: Main ‘debug’ command table. Usage: .debug <subcommand> <args>
infront: No description entered.
showreact: No description entered.
aimove: No description entered.
dist: No description entered.
face: No description entered.
moveinfo: No description entered.
setbytes: No description entered.
getbytes: No description entered.
unroot: No description entered.
root: No description entered.
landwalk: No description entered.
waterwalk: No description entered.
castspell: .castspell <spellid> - Casts spell on target.
castspellne: .castspellne <spellid> - Casts spell on target (only plays animations, doesnt handle effects or range/facing/etc.
celldelete: USE WITH CAUTION! '.celldelete YES' - Removes everything in current cell from game and database. '.celldelete YES YES' removes everything in a range of 1cell.
addrestxp: .addrestxp - Adds x rest XP to player.
generatename: .generatename - Generates name for pet, etc.
attackerinfo: .attackerinfo - Shows selected mob/player's attacker's infomation.
showattackers: .showattackers - Shows selected mob/player's attacker on the minimap.
aggrorange: .aggrorange - Shows aggro Range of the selected Creature.
knockback : .knockback <value> - Knocks you back.
fade : .fade <value> - calls ModThreatModifyer().
threatMod : .threatMod <value> - calls ModGeneratedThreatModifyer().
calcThreat : .calcThreat <dmg> <spellId> - calculates threat.
threatList : .threatList - returns all AI_Targets of the selected Creature.
gettptime: grabs transporter travel time
itempushresult: sends item push result
weather: No description entered.
setbit: No description entered.
setvalue: No description entered.
getpos: No description entered.
Battlegrounds Commands [e]
battleground: Main BG command table. Usage: .battleground <subcommand> <args>
setbgscore: <Teamid> <Score> - Sets battleground score. 2 Arguments.
startbg: Starts current battleground match.
pausebg: Pauses current battleground match.
bginfo: Displays information about current battleground.
battleground: Shows BG Menu
setworldstate: <var> <val> - Var can be in hex. WS Value.
playsound: <val>. Val can be in hex.
setbfstatus: .setbfstatus – Not Yet Implemented.
leave: Leaves the current battleground.
Extended Debug Commands? [f]
killbyplayer: Disconnects the player with name <s>.
killbyaccount: Disconnects the session with account name <s>.
getrate: Gets rate <x>.
setrate: Sets rate <x>.
GM Ticket Commands [g]
gmTicket: Main GM ticket system command table. Usage: .gmTicket <subcommand> <args>
get: Gets GM Ticket
getId: Gets GM Ticket by ID
delId: Deletes GM Ticket by ID
Invisibility Command [i]
invisible: .invisible - Toggles INVINCIBILITY and INVISIBILITY (mobs won't attack you and nobody can see you, but they can see your chat messages)
Guild Commands [l]
createguild: No description entered.
Modify commands [m]
modify: Main stat-modification command table. Usage: .modify <subcommand> <args>
hp: Health Points/HP
mana: Mana Points/MP
rage: Rage Points
energy: Energy Points
armor: Armor
holy: Holy Resistance
fire: Fire Resistance
nature: Nature Resistance
frost: Frost Resistance
shadow: Shadow Resistance
arcane: Arcane Resistance
damage: Unit Damage Min/Max
scale: Size/Scale
gold: Gold/Money/Copper
speed: Movement Speed
nativedisplayid: Native Display ID
displayid: Display ID
flags: Unit Flags:
faction: Faction Template
dynamicflags: Dynamic Flags
talentpoints: Talent Points
loyalty: Loyalty
spirit: Spirit
boundingraidus: Bounding Radius
combatreach: Combat Reach
emotestate: NPC Emote State
More Modify Commands [m]
createaccount: .createaccount - Creates account. Format should be .createaccount username password email
playerinfo: .playerinfo - Displays informations about the selected character (account...)
mount: Mounts into modelid x.
dismount: Dismounts.
start: Teleport's you to a starting location
levelup: No description entered.
additem: No description entered.
removeitem: Removes item %u count %u.
learn: Learns spell
unlearn: Unlearns spell
learnskill: .learnskill <skillid> (optional) <value> <maxvalue> - Learns skill id skillid.
advanceskill: advanceskill <skillid> <amount, optional, default = 1> - Advances skill line x times..
removeskill: .removeskill <skillid> - Removes skill
increaseweaponskill: .increaseweaponskill <count> - Increase eqipped weapon skill x times (defaults to 1).
removeauras: Removes all auras from target
setmotd: [Only registered and activated users can see links. ]
additemset: Adds item set to inv.
gotrig: Warps to areatrigger <id>
createinstance: Creates instance on map <map>
goinstance: Joins instance <instance> <x> <y> <z> <optional mapid>
exitinstance: Exits current instance, return to entry point.
dbreload: Reloads some of the database tables
spawnspiritguide: Spawns a spirit guide (params: 1 = horde, 0 = alliance)
advanceallskills: Advances all skills <x> points.
unlockmovement: Unlocks movement for player.
modperiod: Changes period of current transporter.
npcfollow: Sets npc to follow you
follow: Sets npc to not follow anything
formationlink1: Sets formation master.
formationlink2: Sets formation slave with distance and angle
formationclear: Removes formation from creature
playall: Plays a sound to the entire server.
addipban: Bans an ip address <address/mask> <duration, 0=perm>
banaccounts: Bans accounts <name> <duration, 0=perm>
renamechar: Renames character x to y.
forcerenamechar: Forces character x to rename his char next login
getstanding: Gets standing of faction %u.
setstanding: Sets standing of faction %u.
Cheat Commands [m]
cheat: Main cheat command table. Usage: .cheat <subcommand> <args>
status: Shows active cheats.
taxi: Enables all taxi nodes.
cooldown: Enables no cooldown cheat.
casttime: Enables no cast time cheat.
power: Disables mana consumption etc.
god: Sets god mode, prevents you from taking damage.
fly: Sets fly mode
land: Unsets fly mode
explore: Reveals the unexplored parts of the map.
flyspeed: Modifies fly speed.
stack: Enables aura stacking cheat.
morph: Morphs into model id x.
demorph: Demorphs from morphed model.
Honor Modification Commands [m]
honor: Main honor system command table. Usage: .honor <subcommand> <args>
getpvprank: Gets PVP Rank
setpvprank: Sets PVP Rank
addpoints: Adds x amount of honor points/currency
addkills: Adds x amount of honor kills
globaldailyupdate: Daily honor field moves
singledailyupdate: Daily honor field moves for selected player only
pvpcredit: Sends PVP credit packet, with specified rank and points
Pet Commands [m]
pet: Main pet command table. Usage: .pet <subcommand> <args>
createpet: Creates a pet with <entry>.
renamepet: Renames a pet to <name>.
enablerename: Enables pet rename.
addspell: Teaches pet <spell>.
removespell: Removes pet spell <spell>.
NPC Commands [n]
npc: Main NPC command table. Usage: .npc <subcommand> <args>
vendoradditem: Adds to vendor
vendorremoveitem: Removes from vendor.
flags: Changes NPC flags [Only registered and activated users can see links. ]: emote - Sets emote state
run: No description entered.
addweapon: No description entered.
allowmove: No description entered.
addgrave: No description entered.
addspirit: No description entered.
faction: No description entered.
delete: Deletes mob from db and world.
info: Displays NPC information
guid: Shows selected object guid
addAgent: .npc addAgent <agent> <procEvent> <procChance> <procCount> <spellId> <spellType> <spelltargetType> <spellCooldown> <floatMisc1> <Misc2>
delAgent: .npc delAgent <procEvent> <spellId>
listAgent: .npc listAgent
reset: resets npc health/dmg from temp table.
export: Exports the npc to a sql file
say: .npc say <text> - Makes selected mob say text <text>.
yell: .npc yell <Text> - Makes selected mob yell text <text>.
come: .npc come - Makes npc move to your position
return: .npc return - Returns ncp to spawnpoint.
spawn: .npc spawn - Spawns npc of entry <id>
spawnlink: .spawnlink sqlentry
resetreputation: .resetreputation - Resets reputation to start levels. (use on characters that were made before reputation fixes.)
resetlevel: .resetlevel - Resets all stats to level 1 of targeted player. DANGEROUS.
resetspells: .resetspells - Resets all spells to starting spells of targeted player. DANGEROUS.
resettalents: .resettalents - Resets all talents of targeted player to that of their current level. DANGEROUS.
resetskills: .resetskills - Resets all skills.
GameObject Commands [o]
gobject: Main gameobject command table. Usage: .gobject <subcommand> <args>
select: Selects the nearest GameObject to you
delete: Deletes selected GameObject
spawn: Spawns a GameObject by ID
info: Gives you informations about selected GO
activate: Activates/Opens the selected GO.
enable: Enables the selected GO for use.
scale: Sets scale of selected GO
animprogress: Sets anim progress
export: Exports the current GO selected
statelink: .statelink sqlentry, Links a GO state to a Npc
Information Commands [p]
gm: Shows active GM's
gps: Shows Position
info: Server info
uptime: Shows server uptime
Teleport (Recall)Commands [q]
recall: Main teleportation command table. Usage: .recall <subcommand> <args>
list: List recall locations
port: Port to recalled location
add: Add recall location
del: Remove a recall location
portplayer: recall ports player
Life and Death Commands [r]
kill: .kill - Kills selected unit.
revive: Revives you.: 0, 0, 0},
reviveplr: Revives player specified.
Save Commands [s]
save: Save's your character
saveall: Save's all playing characters
GM Tag Commands [t]
fmoff: Sets GM tag off
gmon: Sets GM tag on
Universal Commands [u]
Commands: Shows Commands
help: Shows help for command
announce: Sends Msg To All
wannounce: Sends Widescreen Msg To All
Extended Teleport Commands [v]
appear: Teleports to x's position.
summon: Summons x to your position
worldport: No description entered.
Waypoint Commands [w]
waypoint: waypointCommandTable
add: Add wp at current pos
show: Show wp's for creature
hide: Hide wp's for creature
delete: Delete selected wp
movehere: Move to this wp
flags: Wp flags
waittime: Wait time at this wp
emote: Emote at this wp
skin: Skin at this wp
change: Change at this wp
info: Show info for wp
movetype: Movement type at wp
generateNo description entered.Randomly generate wps
save: Save all waypoints
deleteall: Delete all waypoints
Admin Commands [z]
security: No description entered.
servershutdown: Initiates server shutdown in <x> seconds.
serverrestart: Initiates server restart in <x> seconds.
castall: Makes all players online cast spell <x>.
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All the Antrix gm commands 
