diff --git a/Sources/Common/FileSystemType.swift b/Sources/Common/FileSystemType.swift
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+++ b/Sources/Common/FileSystemType.swift
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+// Copyright (c) 2017 Timofey Solomko
+// Licensed under MIT License
+//
+// See LICENSE for license information
+
+import Foundation
+
+public enum FileSystemType {
+    // TODO: Sort alphabetically.
+    /**
+     One of many UNIX-like systems.
+
+     - Note: Modern macOS systems also fall into this category.
+     */
+    case unix
+    /// Older Macintosh systems.
+    case macintosh
+    case fat
+    case ntfs
+    case other
+}