diff --git a/respak2.cpp b/respak2.cpp
new file mode 100644
index 0000000..9e97f62
--- /dev/null
+++ b/respak2.cpp
@@ -0,0 +1,88 @@
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <filesystem>
+
+using namespace std;
+namespace fs = std::filesystem;
+
+void printHelp()
+{
+    cout << "Usage: respak2 <command>" << endl;
+    cout << endl << "Valid commands:" << endl;
+    cout << "-p: Pack all files and folders within the 'data' folder into a file named 'data.jf2'." << endl;
+    cout << "-u: Unpack all files inside the file 'data.jf2' into the 'data' folder." << endl;
+    cout << "-l: List the contents of the 'data.jf2' file." << endl;
+    exit(1);
+}
+
+void printErrorAndExit(string errorMsg) {
+    cout << errorMsg << endl;
+    exit(1);
+}
+
+void printDirectory(string path, int tabs=0)
+{
+    for (const auto & entry : fs::directory_iterator(path))
+    {
+        for(int i=0;i<tabs;++i) cout << '\t';
+        cout << entry.path().string() << endl;
+        if (entry.is_directory()) printDirectory(entry.path().string(),tabs+1);
+    }
+}
+
+void packDirectory(string path, ofstream fo, uint32_t& num_files, uint32_t& toc_index)
+{
+
+}
+
+void doPack()
+{
+    printDirectory("data");
+
+    uint32_t num_files = 4;
+    uint32_t toc_offset = 512;
+
+    ofstream fo;
+    fo.open("data.jf2", ios::binary);
+    if (!fo.is_open()) printErrorAndExit("ERROR: No s'ha pogut obrir l'arxiu 'data.jf2'.");
+    fo.write("PK2",4);
+    fo.write( (char*)&num_files, 4 );
+    fo.write( (char*)&toc_offset, 4 );
+
+    packDirectory("data", fo, num_files, toc_offset);
+
+    fo.seekp(4);
+    fo.write( (char*)&num_files, 4 );
+    fo.write( (char*)&toc_offset, 4 );
+
+    fo.close();
+}
+
+void doUnpack()
+{
+
+}
+
+void doList()
+{
+
+}
+
+int main(int argc, char *argv[])
+{
+    if (argc<2) printHelp();
+
+    string command = argv[1];
+
+    if ( command == "-p" )
+        doPack();
+    else if ( command == "-u" )
+        doUnpack();
+    else if ( command == "-l" )
+        doList();
+    else
+        printHelp();
+
+    return 0;
+}
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