Server info command

src/main/java/pw/kaboom/extras/Main.java

@@ -661,6 +661,7 @@ public class Main extends JavaPlugin {
 		this.getCommand("jumpscare").setExecutor(new CommandJumpscare());
 		this.getCommand("prefix").setExecutor(new CommandPrefix());
 		this.getCommand("pumpkin").setExecutor(new CommandPumpkin());
+		this.getCommand("serverinfo").setExecutor(new CommandServerInfo());
 		this.getCommand("skin").setExecutor(new CommandSkin());
 		this.getCommand("spawn").setExecutor(new CommandSpawn());
 		this.getCommand("spidey").setExecutor(new CommandSpidey());

src/main/java/pw/kaboom/extras/commands/CommandServerInfo.java

@@ -0,0 +1,113 @@
+package pw.kaboom.extras;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryPoolMXBean;
+
+import java.net.InetAddress;
+
+import org.bukkit.ChatColor;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+
+class CommandServerInfo implements CommandExecutor {
+	private void sendInfoMessage(CommandSender target, String description, String value) {
+		target.sendMessage(
+			ChatColor.GRAY + description + ": " +
+			ChatColor.WHITE + value
+		);
+	}
+
+	public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+		try {
+			sendInfoMessage(sender, "Hostname",
+				InetAddress.getLocalHost().getHostName()
+			);
+	        sendInfoMessage(sender, "IP address",
+				InetAddress.getLocalHost().getHostAddress()
+			);
+		} catch (Exception exception) {
+		}
+
+		sendInfoMessage(sender, "OS name",
+			ManagementFactory.getOperatingSystemMXBean().getName()
+		);
+		sendInfoMessage(sender, "OS architecture",
+			ManagementFactory.getOperatingSystemMXBean().getArch()
+		);
+		sendInfoMessage(sender, "OS version",
+			ManagementFactory.getOperatingSystemMXBean().getVersion()
+		);
+		sendInfoMessage(sender, "Java VM",
+			ManagementFactory.getRuntimeMXBean().getVmName()
+		);
+		sendInfoMessage(sender, "Java version",
+			ManagementFactory.getRuntimeMXBean().getSpecVersion() +
+			" " +
+			ManagementFactory.getRuntimeMXBean().getVmVersion()
+		);
+
+		try {
+			String[] shCommand = {
+				"/bin/sh",
+				"-c",
+				"cat /proc/cpuinfo | grep 'model name' | cut -f 2 -d ':' | awk '{$1=$1}1' | head -1"
+			};
+
+ 			Process process = Runtime.getRuntime().exec(shCommand);
+			InputStreamReader isr = new InputStreamReader(process.getInputStream());
+			BufferedReader br = new BufferedReader(isr);
+			String line;
+
+			while ((line = br.readLine()) != null) {
+				sendInfoMessage(sender, "CPU model",
+					line
+				);
+			}
+
+			br.close();
+		} catch (Exception exception) {
+		}
+
+		sendInfoMessage(sender, "CPU cores",
+			String.valueOf(Runtime.getRuntime().availableProcessors())
+		);
+		sendInfoMessage(sender, "CPU load",
+			String.valueOf(ManagementFactory.getOperatingSystemMXBean().getSystemLoadAverage())
+		);
+
+		long heapUsage = ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getUsed();
+		long nonHeapUsage = ManagementFactory.getMemoryMXBean().getNonHeapMemoryUsage().getUsed();
+		long memoryMax = (
+			ManagementFactory.getMemoryMXBean().getHeapMemoryUsage().getMax() + 
+			ManagementFactory.getMemoryMXBean().getNonHeapMemoryUsage().getMax()
+		);
+		long memoryUsage = (heapUsage + nonHeapUsage);
+
+		sendInfoMessage(sender, "Available memory",
+			(memoryMax / 1024 / 1024) + " MB"
+		);
+		sendInfoMessage(sender, "Heap memory usage",
+			(heapUsage / 1024 / 1024) + " MB"
+		);
+		sendInfoMessage(sender, "Non-heap memory usage",
+			(nonHeapUsage / 1024 / 1024) + " MB"
+		);
+		sendInfoMessage(sender, "Total memory usage",
+			(memoryUsage / 1024 / 1024) + " MB"
+		);
+		
+		long minutes = (ManagementFactory.getRuntimeMXBean().getUptime() / 1000) / 60;
+		long seconds = (ManagementFactory.getRuntimeMXBean().getUptime() / 1000) % 60;
+
+		sendInfoMessage(sender, "Server uptime",
+			minutes + " minute(s) " +
+			seconds + " second(s)"
+		);
+		return true;
+	}
+}

src/main/resources/plugin.yml

@@ -30,6 +30,10 @@ commands:
    pumpkin:
       description: Places a pumpkin on a player's head
       permission: extras.pumpkin
+   serverinfo:
+      aliases: specs
+      description: Shows detailed server information
+      permission: extras.serverinfo
    skin:
       description: Changes your skin
       permission: extras.skin