If you run an L2J Lineage 2 server, the // GM commands are how you manage everything in-game. This is a reference of the ones you will actually use day to day. Type them in normal chat while logged in on a GM account.
Access & status
//admin— open the admin menu//gm— toggle GM status//gmchat <msg>— GM-only global chat//gmliston///gmlistoff— show/hide yourself on the GM list//silence— block incoming private messages
Character editing
//edit_character— edit the targeted player//character_list///show_characters— list online players//find_character <name>— search for a player//save_modifications— save edits to the target//nokarma— clear the target's karma//setkarma <value>— set karma
Movement & world
//tele///teleto— open teleport menu / teleport to target//recall <name>— summon a player to you//goto <x> <y> <z>— move to coordinates//atmosphere <sky> <day|night>— change the sky//diet on|off— toggle weight restriction
Spawning & items
//spawn <npc_id>— spawn an NPC/monster//unspawnall— remove spawned NPCs//give <item_id> <count>— give items to the target//play_sound— open the sound test page
Events & server
//saveolymp— save the Olympiad//manualhero— manually assign heroes//server_shutdown <seconds>— schedule a shutdown//reload <type>— reload configs/scripts without a restart
Exact command names vary slightly between L2J forks (aCis, L2jMobius, L2jFrozen and others). If a command is missing, check that fork's admin command handlers.
Running a project and want players? List it on L2TopZone.
FAQ
How do I make a character a GM?
Set its access level in the database, then use //gm in-game to toggle GM status.
Do the commands differ between L2J forks?
Yes — aCis, L2jMobius, L2jFrozen and others rename or add commands. Check that fork's admin handlers.
How do I spawn a monster or NPC?
Use //spawn