UPdate.

example/os_demo.wren

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+// retoor <retoor@molodetz.nl>
+
+import "os" for Platform, Process
+
+System.print("=== OS Module Demo ===\n")
+
+System.print("--- Platform Information ---")
+System.print("Name: %(Platform.name)")
+System.print("Is POSIX: %(Platform.isPosix)")
+System.print("Is Windows: %(Platform.isWindows)")
+System.print("Home Path: %(Platform.homePath)")
+
+System.print("\n--- Process Information ---")
+System.print("PID: %(Process.pid)")
+System.print("Parent PID: %(Process.ppid)")
+System.print("Working Directory: %(Process.cwd)")
+System.print("Wren Version: %(Process.version)")
+
+System.print("\n--- Command Line Arguments ---")
+System.print("Arguments: %(Process.arguments)")
+System.print("All Arguments: %(Process.allArguments)")
+
+System.print("\n--- Platform-Specific Paths ---")
+var separator = Platform.isWindows ? "\\" : "/"
+var configPath = Platform.homePath + separator + ".config"
+System.print("Config directory: %(configPath)")
+
+System.print("\n--- Conditional Exit ---")
+var args = Process.arguments
+if (args.count > 0 && args[0] == "--fail") {
+    System.print("Exiting with error code 1")
+    Process.exit(1)
+}
+
+System.print("Exiting normally")
+Process.exit(0)