diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index 9186fff93..06898f0d7 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -1260,6 +1260,28 @@ class Server{
 		$this->whitelist->reload();
 	}
 
+	/**
+	 * @return string[]
+	 */
+	public function getCommandAliases(){
+		$section = $this->getProperty("aliases");
+		$result = [];
+		if(is_array($section)){
+			foreach($section as $key => $value){
+				$commands = [];
+				if(is_array($value)){
+					$commands = $value;
+				}else{
+					$commands[] = $value;
+				}
+
+				$result[$key] = $commands;
+			}
+		}
+
+		return $result;
+	}
+
 	/**
 	 * @return Server
 	 */
@@ -1435,11 +1457,12 @@ class Server{
 			$this->scheduler->scheduleDelayedRepeatingTask(new CallbackTask(array($this, "doAutoSave")), $this->getProperty("ticks-per.autosave", 6000), $this->getProperty("ticks-per.autosave", 6000));
 		}
 
-		$this->scheduler->scheduleDelayedRepeatingTask(new CallbackTask(array($this, "doLevelGC")), $this->getProperty("chunk-gc.period-in-ticks", 600), $this->getProperty("chunk-gc.period-in-ticks", 600));
+		if($this->getProperty("chunk-gc.period-in-ticks", 600) > 0){
+			$this->scheduler->scheduleDelayedRepeatingTask(new CallbackTask(array($this, "doLevelGC")), $this->getProperty("chunk-gc.period-in-ticks", 600), $this->getProperty("chunk-gc.period-in-ticks", 600));
+		}
 
 		$this->enablePlugins(PluginLoadOrder::POSTWORLD);
 
-
 	}
 
 	/**
@@ -1494,14 +1517,10 @@ class Server{
 
 		if($type === PluginLoadOrder::POSTWORLD){
 			$this->commandMap->registerServerAliases();
-			$this->loadCustomPermissions();
+			DefaultPermissions::registerCorePermissions();
 		}
 	}
 
-	private function loadCustomPermissions(){
-		DefaultPermissions::registerCorePermissions();
-	}
-
 	/**
 	 * @param Plugin $plugin
 	 */
diff --git a/src/pocketmine/command/FormattedCommandAlias.php b/src/pocketmine/command/FormattedCommandAlias.php
new file mode 100644
index 000000000..e70874047
--- /dev/null
+++ b/src/pocketmine/command/FormattedCommandAlias.php
@@ -0,0 +1,155 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+namespace pocketmine\command;
+
+use pocketmine\Server;
+use pocketmine\utils\TextFormat;
+
+class FormattedCommandAlias extends Command{
+	private $formatStrings = [];
+
+	/**
+	 * @param string   $alias
+	 * @param string[] $formatStrings
+	 */
+	public function __construct($alias, array $formatStrings){
+		parent::__construct($alias);
+		$this->formatStrings = $formatStrings;
+	}
+
+	public function execute(CommandSender $sender, $commandLabel, array $args){
+
+		$commands = [];
+		$result = false;
+
+		foreach($this->formatStrings as $formatString){
+			try{
+				$commands[] = $this->buildCommand($formatString, $args);
+			}catch(\Exception $e){
+				if($e instanceof \InvalidArgumentException){
+					$sender->sendMessage(TextFormat::RED . $e->getMessage());
+				}else{
+					$sender->sendMessage(TextFormat::RED . "An internal error occurred while attempting to perform this command");
+				}
+				return false;
+			}
+		}
+
+		foreach($commands as $command){
+			$result |= Server::getInstance()->dispatchCommand($sender, $command);
+		}
+
+		return (bool) $result;
+	}
+
+	/**
+	 * @param string $formatString
+	 * @param array  $args
+	 *
+	 * @return string
+	 * @throws \InvalidArgumentException
+	 */
+	private function buildCommand($formatString, array $args){
+		$index = strpos($formatString, '$');
+		while($index !== false){
+			$start = $index;
+			if($index > 0 and $formatString{$start - 1} === "\\"){
+				$formatString = substr($formatString, 0, $start - 1) . substr($formatString, $start);
+				$index = strpos($formatString, '$', $index);
+				continue;
+			}
+
+			$required = false;
+			if($formatString{$index + 1} == '$'){
+				$required = true;
+
+				++$index;
+			}
+
+			++$index;
+
+			$argStart = $index;
+
+			while($index < strlen($formatString) and self::inRange($formatString{$index} - 48, 0, 9)){
+				++$index;
+			}
+
+			if($argStart === $index){
+				throw new \InvalidArgumentException("Invalid replacement token");
+			}
+
+			$position = intval(substr($formatString, $argStart, $index));
+
+			if($position === 0){
+				throw new \InvalidArgumentException("Invalid replacement token");
+			}
+
+			--$position;
+
+			$rest = false;
+
+			if($index < strlen($formatString) and $formatString{$index} === "-"){
+				$rest = true;
+				++$index;
+			}
+
+			$end = $index;
+
+			if($required and $position >= count($args)){
+				throw new \InvalidArgumentException("Missing required argument " . ($position + 1));
+			}
+
+			$replacement = "";
+			if($rest and $position < count($args)){
+				for($i = $position; $i < count($args); ++$i){
+					if($i !== $position){
+						$replacement .= " ";
+					}
+
+					$replacement .= $args[$i];
+				}
+			}elseif($position < count($args)){
+				$replacement .= $args[$position];
+			}
+
+			$formatString = substr($formatString, 0, $start) . $replacement . substr($formatString, $end);
+
+			$index = $start + strlen($replacement);
+
+			$index = strpos($formatString, '$', $index);
+		}
+
+		return $formatString;
+	}
+
+	/**
+	 * @param int $i
+	 * @param int $j
+	 * @param int $k
+	 *
+	 * @return bool
+	 */
+	private static function inRange($i, $j, $k){
+		return $i >= $j and $i <= $k;
+	}
+
+}
\ No newline at end of file
diff --git a/src/pocketmine/command/SimpleCommandMap.php b/src/pocketmine/command/SimpleCommandMap.php
index 798b9056c..a1eb9e38b 100644
--- a/src/pocketmine/command/SimpleCommandMap.php
+++ b/src/pocketmine/command/SimpleCommandMap.php
@@ -207,7 +207,44 @@ class SimpleCommandMap implements CommandMap{
 	 * @return void
 	 */
 	public function registerServerAliases(){
-		//TODO
+		$values = $this->server->getCommandAliases();
+
+		foreach($values as $alias => $commandStrings){
+			if(strpos($alias, ":") !== false or strpos($alias, " ") !== false){
+				$this->server->getLogger()->warning("Could not register alias ". $alias ." because it contains illegal characters");
+				continue;
+			}
+
+			$targets = [];
+
+			$bad = "";
+			foreach($commandStrings as $commandString){
+				$args = explode(" ", $commandString);
+				$command = $this->getCommand($args[0]);
+
+				if($command === null){
+					if(strlen($bad) > 0){
+						$bad .= ", ";
+					}
+					$bad .= $commandString;
+				}else{
+					$targets[] = $commandString;
+				}
+			}
+
+			if(strlen($bad) > 0){
+				$this->server->getLogger()->warning("Could not register alias ". $alias ." because it contains commands that do not exist: ". $bad);
+				continue;
+			}
+
+			//These registered commands have absolute priority
+			if(count($targets) > 0){
+				$this->knownCommands[strtolower($alias)] = new FormattedCommandAlias(strtolower($alias), $targets);
+			}else{
+				unset($this->knownCommands[strtolower($alias)]);
+			}
+
+		}
 	}