http://dev.bukkit.org/bukkit-plugins/player-console-listener

package com.skyost.pcl;

import java.util.logging.Handler;
import java.util.logging.LogRecord;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

public class ConsolePlayerListenerPlugin extends JavaPlugin {
    Handler han;

    public boolean onCommand(final CommandSender sender, Command cmd, String label, String[] args){
        if(cmd.getName().equalsIgnoreCase("listen")) {
            if(sender instanceof Player) {
                    if(sender.hasPermission("console.playerlistener.listen")) {
                        if(args[0].equalsIgnoreCase("start") || args[0].equalsIgnoreCase("st")) {
                            sender.sendMessage(ChatColor.GREEN + "Getting alls messages from the console...");
                            han = new Handler() {
                                @Override
                                public void close() throws SecurityException { /* Do nothing...  */ }
                                @Override
                                public void flush() { /* Do nothing...  */ }
                                @Override
                                public void publish(LogRecord logRecord) { sender.sendMessage("[" + logRecord.getLevel().toString() + "]" + " - " + logRecord.getMessage()); }
                            };
                            Bukkit.getServer().getLogger().addHandler(han);
                        }
                        else if(args[0].equalsIgnoreCase("stop") || args[0].equalsIgnoreCase("sp")) {
                            sender.sendMessage(ChatColor.RED + "Stop getting alls messages from the console...");
                            Bukkit.getServer().getLogger().removeHandler(han);
                        }
                        else {
                            return false;
                        }
                    }
                }
                else {
                    sender.sendMessage(ChatColor.RED + "You don't have permission to do this !");
                }
            }
            else {
                sender.sendMessage(ChatColor.RED + "[ConsolePlayerListener] You can't do this from the console !");
            }
        return true;
    }
}