[TheRaGeLord]

You Can do it Like This:-

pawn Код:

public OnPlayerCommandPerformed(playerid, cmdtext[], success) 
{ 
    if (!success) 
    { 
       SendClientMessage(playerid,COLOR_RED,"Error: you entered a wrong command use /help"); 
    } 
    return 1; 
}

Here Return 1 will Hide your "Server: Unkown Command" Text