diff --git a/argument.cpp b/argument.cpp
new file mode 100644
index 0000000..e2ae471
--- /dev/null
+++ b/argument.cpp
@@ -0,0 +1,58 @@
+#include <iostream>
+#include <iterator>
+#include <algorithm>
+#include <cassert>
+#include "argument.hpp"
+
+ArgumentParser::ArgumentParser(int argc, char** argv)
+{
+    int option = 0;
+    while(-1 != (option = getopt_long(argc, argv, optionstr, options, NULL)))
+    {
+        if ((option == '?') || (option == 'h'))
+        {
+            usage(argv);
+            exit(-1);
+        }
+
+        auto i = &options[0];
+        while ((i->val != option) && (i->val != 0)) ++i;
+
+        if (i->val)
+            arguments[i->name] = (i->has_arg ? optarg : true_string);
+    }
+}
+
+const std::string& ArgumentParser::operator[](const std::string& opt)
+{
+    auto i = arguments.find(opt);
+    if (i == arguments.end())
+    {
+        return empty_string;
+    }
+    else
+    {
+        return i->second;
+    }
+}
+
+void ArgumentParser::usage(char** argv)
+{
+    std::cerr << "Usage: " << argv[0] << " [options]" << std::endl;
+    std::cerr << "Options:" << std::endl;
+    std::cerr << "    --help               print this menu" << std::endl;
+    std::cerr << "    --path=<path>        sysfs location to monitor"
+              << std::endl;
+}
+
+const option ArgumentParser::options[] =
+{
+    { "path",   required_argument,  NULL,   'p' },
+    { "help",   no_argument,        NULL,   'h' },
+    { 0, 0, 0, 0},
+};
+
+const char* ArgumentParser::optionstr = "p:?h";
+
+const std::string ArgumentParser::true_string = "true";
+const std::string ArgumentParser::empty_string = "";