diff --git a/examples/run.sh b/examples/run.sh
new file mode 100755
index 0000000..4d79ffa
--- /dev/null
+++ b/examples/run.sh
@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+
+OK=0
+TOTAL=0
+
+for file in `find . -name "*.gri" -exec basename {} \;`
+do
+    echo -en "\e[34m$file ... \e[0m"
+
+    MSG="$(grino $file 2>&1 > /dev/null)"
+    RES=$?
+
+    if [ "$RES" == "0" ]
+    then
+        echo -e "ok"
+        OK=$(($OK + 1))
+    else
+        echo "ko"
+        echo -e "\t\e[31m$MSG\e[0m"
+    fi
+
+    TOTAL=$(($TOTAL + 1))
+done
+
+echo
+
+if [ $OK -eq $TOTAL ]
+then
+    echo -e "\e[32m=== $OK/$TOTAL tests passed !  ===\e[0m"
+    exit 0
+fi
+
+FAILURE=$(($TOTAL - $OK))
+
+echo -e "\e[31m=== $FAILURE/$TOTAL tests failed ===\e[0m"
+exit -1
diff --git a/src/main.cpp b/src/main.cpp
index 09578bd..881b259 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -11,6 +11,55 @@
 #include "src/SymTable.hpp"
 #include "Loader.hpp"
 
+void run(char** argv, bool debug_mode)
+{
+  std::string source;
+  {
+    std::ifstream file { argv[optind] };
+    assert(file);
+    std::string line;
+
+    while (std::getline(file, line))
+      { source += line + (file.eof() ? "" : "\n"); }
+  }
+
+  grino::Logger logger;
+  grino::Lexer lexer {logger, argv[optind]};
+  grino::Parser parser {logger, lexer};
+
+  auto ast = parser.parse(source);
+
+  if (debug_mode)
+    {
+      std::cout << "--- ast ---" << std::endl;
+      std::cout << ast->string() << std::endl;
+    }
+
+  grino::SymTable sym_table {logger};
+  grino::VM vm {logger};
+
+  grino::Loader loader {vm, sym_table};
+  loader.load_libraries();
+
+  grino::Compiler compiler {logger, sym_table};
+  grino::Program program;
+  compiler.compile(ast, program);
+
+  if (debug_mode)
+    {
+      std::cout << "--- program ---" << std::endl;
+      std::cout << program.string() << std::endl;
+    }
+
+  vm.run(program);
+
+  if (debug_mode)
+    {
+      std::cout << "--- stack ---" << std::endl;
+      std::cout << vm.string() << std::endl;
+    }
+}
+
 int main(int argc, char** argv)
 {
   bool debug_mode = false;
@@ -54,50 +103,21 @@ int main(int argc, char** argv)
 
   if (optind < argc)
     {
-      std::string source;
-      {
-        std::ifstream file { argv[optind] };
-        assert(file);
-        std::string line;
-
-        while (std::getline(file, line))
-          { source += line + (file.eof() ? "" : "\n"); }
-      }
-
-      grino::Logger logger;
-      grino::Lexer lexer {logger, argv[optind]};
-      grino::Parser parser {logger, lexer};
-
-      auto ast = parser.parse(source);
-
       if (debug_mode)
         {
-          std::cout << "--- ast ---" << std::endl;
-          std::cout << ast->string() << std::endl;
+          run(argv, debug_mode);
         }
-
-      grino::SymTable sym_table {logger};
-      grino::VM vm {logger};
-
-      grino::Loader loader {vm, sym_table};
-      loader.load_libraries();
-
-      grino::Compiler compiler {logger, sym_table};
-      grino::Program program;
-      compiler.compile(ast, program);
-
-      if (debug_mode)
+      else
         {
-          std::cout << "--- program ---" << std::endl;
-          std::cout << program.string() << std::endl;
-        }
-
-      vm.run(program);
-
-      if (debug_mode)
-        {
-          std::cout << "--- stack ---" << std::endl;
-          std::cout << vm.string() << std::endl;
+          try
+            {
+              run(argv, debug_mode);
+            }
+          catch(std::exception const& err)
+            {
+              std::cerr << err.what() << std::endl;
+              exit(-1);
+            }
         }
     }