diff --git a/CMakeLists.txt b/CMakeLists.txt
index 36a1860..c45022b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,6 +28,8 @@ set(NASAL_OBJECT_SOURCE_FILE
     ${CMAKE_SOURCE_DIR}/src/natives/regex_lib.cpp
     ${CMAKE_SOURCE_DIR}/src/natives/unix_lib.cpp
     ${CMAKE_SOURCE_DIR}/src/repl/repl.cpp
+    ${CMAKE_SOURCE_DIR}/src/util/fs.cpp
+    ${CMAKE_SOURCE_DIR}/src/util/util.cpp
     ${CMAKE_SOURCE_DIR}/src/ast_dumper.cpp
     ${CMAKE_SOURCE_DIR}/src/ast_visitor.cpp
     ${CMAKE_SOURCE_DIR}/src/nasal_ast.cpp
diff --git a/makefile b/makefile
index 61d4400..305a89e 100644
--- a/makefile
+++ b/makefile
@@ -36,8 +36,10 @@ NASAL_HEADER = \
 	src/natives/json_lib.h\
 	src/natives/unix_lib.h\
 	src/natives/coroutine.h\
+	src/natives/regex_lib.h\
 	src/repl/repl.h\
-	src/natives/regex_lib.h
+	src/util/fs.h\
+	src/util/util.h
 
 NASAL_OBJECT = \
 	build/nasal_err.o\
@@ -65,9 +67,11 @@ NASAL_OBJECT = \
 	build/nasal_type.o\
 	build/nasal_vm.o\
 	build/nasal_dbg.o\
-	build/repl.o\
 	build/regex_lib.o\
+	build/repl.o\
 	build/cli.o\
+	build/fs.o\
+	build/util.o\
 	build/main.o
 
 
@@ -94,6 +98,12 @@ build/nasal_misc.o: src/nasal.h src/nasal_misc.cpp | build
 build/cli.o: src/cli/cli.h src/cli/cli.cpp | build
 	$(CXX) $(CXXFLAGS) src/cli/cli.cpp -o build/cli.o
 
+build/util.o: src/util/util.h src/util/util.cpp | build
+	$(CXX) $(CXXFLAGS) src/util/util.cpp -o build/util.o
+
+build/fs.o: src/nasal.h src/util/fs.h src/util/fs.cpp | build
+	$(CXX) $(CXXFLAGS) src/util/fs.cpp -o build/fs.o
+
 build/repl.o: $(NASAL_HEADER) src/repl/repl.h src/repl/repl.cpp | build
 	$(CXX) $(CXXFLAGS) src/repl/repl.cpp -o build/repl.o
 
@@ -111,12 +121,14 @@ build/nasal_import.o: \
 	src/nasal_ast.h\
 	src/nasal_lexer.h\
 	src/nasal_parse.h\
+	src/util/fs.h\
 	src/nasal_import.h src/nasal_import.cpp | build
 	$(CXX) $(CXXFLAGS) src/nasal_import.cpp -o build/nasal_import.o
 
 build/nasal_lexer.o: \
 	src/nasal.h\
 	src/repl/repl.h\
+	src/util/fs.h\
 	src/nasal_err.h\
 	src/nasal_lexer.h src/nasal_lexer.cpp | build
 	$(CXX) $(CXXFLAGS) src/nasal_lexer.cpp -o build/nasal_lexer.o
@@ -160,6 +172,7 @@ build/io_lib.o: \
 	src/nasal.h\
 	src/nasal_type.h\
 	src/nasal_gc.h\
+	src/util/fs.h\
 	src/natives/io_lib.h src/natives/io_lib.cpp | build
 	$(CXX) $(CXXFLAGS) src/natives/io_lib.cpp -o build/io_lib.o
 
diff --git a/src/main.cpp b/src/main.cpp
index d7082e9..f1eaca2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -21,19 +21,6 @@
 #include <thread>
 #include <cstdlib>
 
-const u32 VM_RAW_AST  = 1;
-const u32 VM_AST      = 1<<1;
-const u32 VM_CODE     = 1<<2;
-const u32 VM_TIME     = 1<<3;
-const u32 VM_EXEC     = 1<<4;
-const u32 VM_DETAIL   = 1<<5;
-const u32 VM_DEBUG    = 1<<6;
-const u32 VM_SYMINFO  = 1<<7;
-const u32 VM_PROFILE  = 1<<8;
-const u32 VM_PROF_ALL = 1<<9;
-const u32 VM_REF_FILE = 1<<10;
-const u32 VM_LIMIT    = 1<<11;
-
 std::ostream& help(std::ostream& out) {
     out
     << "\n"
diff --git a/src/nasal.h b/src/nasal.h
index 225ee82..3820844 100644
--- a/src/nasal.h
+++ b/src/nasal.h
@@ -55,27 +55,4 @@ i32 utf8_hdchk(const char);
 std::string char_to_hex(const char);
 std::string rawstr(const std::string&, const usize maxlen = 0);
 
-namespace fs {
-
-class path {
-private:
-    std::string file_system_path;
-
-public:
-    path(const path&) = default;
-    path(const std::string& file_path): file_system_path(file_path) {}
-    path& operator/(const path&);
-    const char* c_str() const {
-        return file_system_path.c_str();
-    }
-    const std::string& str() const {
-        return file_system_path;
-    }
-};
-
-bool exists(const path&);
-bool is_regular(const path&);
-
-}
-
 }
\ No newline at end of file
diff --git a/src/nasal_import.cpp b/src/nasal_import.cpp
index b5273e5..294bd91 100644
--- a/src/nasal_import.cpp
+++ b/src/nasal_import.cpp
@@ -1,5 +1,6 @@
 #include "nasal_import.h"
 #include "symbol_finder.h"
+#include "util/fs.h"
 
 #include <memory>
 #include <unordered_set>
diff --git a/src/nasal_import.h b/src/nasal_import.h
index 420d6d6..36a0061 100644
--- a/src/nasal_import.h
+++ b/src/nasal_import.h
@@ -13,6 +13,7 @@
 #include "nasal_lexer.h"
 #include "nasal_parse.h"
 #include "symbol_finder.h"
+#include "util/fs.h"
 
 #include <cstring>
 #include <sstream>
diff --git a/src/nasal_lexer.cpp b/src/nasal_lexer.cpp
index 751692e..f98be38 100644
--- a/src/nasal_lexer.cpp
+++ b/src/nasal_lexer.cpp
@@ -6,6 +6,7 @@
 
 #include "nasal_lexer.h"
 #include "repl/repl.h"
+#include "util/fs.h"
 
 namespace nasal {
 
diff --git a/src/nasal_misc.cpp b/src/nasal_misc.cpp
index 77da7dc..24428b0 100644
--- a/src/nasal_misc.cpp
+++ b/src/nasal_misc.cpp
@@ -1,12 +1,5 @@
 #include "nasal.h"
 
-#ifndef _MSC_VER
-#include <unistd.h>
-#else
-#include <io.h>
-#endif
-#include <sys/stat.h>
-
 #ifdef _MSC_VER
 #pragma warning (disable:4996)
 #endif
@@ -277,32 +270,4 @@ std::string rawstr(const std::string& str, const usize maxlen) {
     return ret;
 }
 
-namespace fs {
-
-path& path::operator/(const path& another) {
-    this->file_system_path += is_windows()? "\\":"/";
-    this->file_system_path += another.file_system_path;
-    return *this;
-}
-
-bool exists(const path& file_path) {
-#ifdef _MSC_VER
-    #define F_OK 0 // fuck msc
-#endif
-    return access(file_path.c_str(), F_OK)==0;
-}
-
-bool is_regular(const path& file_path) {
-#ifdef _MSC_VER
-    #define S_ISREG(m) (((m)&0xF000)==0x8000)
-#endif
-    struct stat buffer;
-    if (stat(file_path.c_str(), &buffer)!=0) {
-        return false;
-    }
-    return S_ISREG(buffer.st_mode);
-}
-
-}
-
 }
diff --git a/src/natives/io_lib.cpp b/src/natives/io_lib.cpp
index 7f9b469..389a6a5 100644
--- a/src/natives/io_lib.cpp
+++ b/src/natives/io_lib.cpp
@@ -1,4 +1,5 @@
 #include "natives/io_lib.h"
+#include "util/fs.h"
 
 #include <sys/stat.h>
 
diff --git a/src/util/fs.cpp b/src/util/fs.cpp
new file mode 100644
index 0000000..941ec9f
--- /dev/null
+++ b/src/util/fs.cpp
@@ -0,0 +1,38 @@
+#ifndef _MSC_VER
+#include <unistd.h>
+#else
+#include <io.h>
+#endif
+
+#include <sys/stat.h>
+
+#include "util/fs.h"
+#include "nasal.h"
+
+namespace nasal::fs {
+
+path& path::operator/(const path& another) {
+    this->file_system_path += is_windows()? "\\":"/";
+    this->file_system_path += another.file_system_path;
+    return *this;
+}
+
+bool exists(const path& file_path) {
+#ifdef _MSC_VER
+    #define F_OK 0 // fuck msc
+#endif
+    return access(file_path.c_str(), F_OK)==0;
+}
+
+bool is_regular(const path& file_path) {
+#ifdef _MSC_VER
+    #define S_ISREG(m) (((m)&0xF000)==0x8000)
+#endif
+    struct stat buffer;
+    if (stat(file_path.c_str(), &buffer)!=0) {
+        return false;
+    }
+    return S_ISREG(buffer.st_mode);
+}
+
+}
\ No newline at end of file
diff --git a/src/util/fs.h b/src/util/fs.h
new file mode 100644
index 0000000..9e25df6
--- /dev/null
+++ b/src/util/fs.h
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <cstring>
+#include <sstream>
+
+namespace nasal::fs {
+
+class path {
+private:
+    std::string file_system_path;
+
+public:
+    path(const path&) = default;
+    path(const std::string& file_path): file_system_path(file_path) {}
+    path& operator/(const path&);
+    const char* c_str() const {
+        return file_system_path.c_str();
+    }
+    const std::string& str() const {
+        return file_system_path;
+    }
+};
+
+bool exists(const path&);
+bool is_regular(const path&);
+
+}
\ No newline at end of file
diff --git a/src/util/util.cpp b/src/util/util.cpp
new file mode 100644
index 0000000..8e1ec44
--- /dev/null
+++ b/src/util/util.cpp
@@ -0,0 +1,3 @@
+#include "util/util.h"
+
+namespace nasal::util {}
\ No newline at end of file
diff --git a/src/util/util.h b/src/util/util.h
new file mode 100644
index 0000000..4724961
--- /dev/null
+++ b/src/util/util.h
@@ -0,0 +1,3 @@
+#pragma
+
+namespace nasal::util {}
\ No newline at end of file
diff --git a/test/md5compare.nas b/test/md5compare.nas
index c5c17fc..bf74269 100644
--- a/test/md5compare.nas
+++ b/test/md5compare.nas
@@ -47,6 +47,12 @@ var compare = func() {
     };
 }();
 
+var add_all_cpp_files = func(vec, path) {
+    foreach(var p; file.find_all_files_with_extension(path,"cpp","h")) {
+        append(vec, path~"/"~p);
+    }
+}
+
 var filechecksum = func() {
     var files = [];
     foreach(var p; file.find_all_files_with_extension("./test","nas")) {
@@ -61,9 +67,11 @@ var filechecksum = func() {
     foreach(var p; file.find_all_files_with_extension(".","md")) {
         append(files, "./"~p);
     }
-    foreach(var p; file.find_all_files_with_extension("./src","cpp","h")) {
-        append(files, "./src/"~p);
-    }
+    add_all_cpp_files(files, "./src");
+    add_all_cpp_files(files, "./src/cli");
+    add_all_cpp_files(files, "./src/natives");
+    add_all_cpp_files(files, "./src/repl");
+    add_all_cpp_files(files, "./src/util");
     foreach(var p; file.find_all_files_with_extension("./doc","md")) {
         append(files, "./doc/"~p);
     }