diff --git a/README.md b/README.md
index bbab8c7..be08206 100644
--- a/README.md
+++ b/README.md
@@ -8,19 +8,20 @@ TODO
 
 ### Build
 run this command:
-    autoreconf --force --verbose --install
+    `autoreconf --force --verbose --install`
 
 ### Test
 run this command:
-     ./configure CFLAGS='-std=c99 -Werror -Wall -Wextra -Wvla'
+     `./configure CFLAGS='-std=c99 -Werror -Wall -Wextra -Wvla'`
 then:
-    make
+    `make`
 
 #### asan
 run this command:
-    ./configure CFLAGS='-std=c99 -Werror -Wall -Wextra -Wvla -g -fsanitize=address'
+    `./configure CFLAGS='-std=c99 -Werror -Wall -Wextra -Wvla -g -fsanitize=address'`
+
 then:
-    make check
+    `make check`
 
 ## Authors
 
diff --git a/src/io_backend/io_backend.c b/src/io_backend/io_backend.c
index 0fd983e..c6cebdc 100644
--- a/src/io_backend/io_backend.c
+++ b/src/io_backend/io_backend.c
@@ -8,6 +8,8 @@
 
 // === Static variables
 
+#include "utils/args/args.h"
+
 static struct iob_context context;
 static FILE *input = NULL;
 static char *stream_buf = NULL;
@@ -102,3 +104,28 @@ ssize_t stream_read(char **stream)
         return IOB_ERROR_GENERIC;
     }
 }
+
+int iob_config_from_args(struct args_options *args, struct iob_context *ctx)
+{
+    switch (args->type)
+    {
+    case INPUT_STDIN:
+        ctx->mode = IOB_MODE_STDIN;
+        ctx->args = NULL;
+        break;
+
+    case INPUT_FILE:
+        ctx->mode = IOB_MODE_SCRIPT;
+        ctx->args = (char *)args->input_source;
+        break;
+
+    case INPUT_CMD:
+        ctx->mode = IOB_MODE_CMD;
+        ctx->args = NULL;
+        break;
+
+    default:
+        return -1;
+    }
+    return 0;
+}
\ No newline at end of file
diff --git a/src/main.c b/src/main.c
index 6ced238..b664786 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,19 +1,68 @@
-// all includes
-
+// All the includes
 #include <stdio.h>
+#include <stdlib.h>
 
+#include "execution/execution.h"
+#include "io_backend/io_backend.h"
+#include "parser/parser.h"
 #include "utils/args/args.h"
 
+enum return_codes
+{
+    SUCCESS = 0,
+    ERR_IO_BACKEND = 2,
+    ERR_MALLOC = 3
+};
+
 int main(int argc, char **argv)
 {
+    // Create the options struct (with argument handler)
     struct args_options options;
     int r = args_handler(argc, argv, &options);
     if (r != 0)
     {
         print_usage(stderr, argv[0]);
-        return 2;
+        return ERR_IO_BACKEND;
+    }
+    // args_print(&options);
+
+    // Create the IO-Backend context struct
+    struct iob_context *io_context = malloc(sizeof(struct iob_context));
+    if (io_context == NULL)
+    {
+        fprintf(stderr,
+                "Error: Memory allocation failed for IO Backend context\n");
+        return ERR_MALLOC;
     }
 
-    args_print(&options);
-    return 0;
+    // Convert args_options to iob_context
+    r = iob_config_from_args(&options, io_context);
+    if (r != 0)
+    {
+        fprintf(stderr,
+                "Error: Failed to configure IO Backend from arguments\n");
+        free(io_context);
+        return ERR_IO_BACKEND;
+    }
+
+    // Init IO Backend (with the context struct)
+    r = iob_init(io_context);
+    if (r != 0)
+    {
+        fprintf(stderr,
+                "Error: IO Backend initialization failed with code %d\n", r);
+        free(io_context);
+        return ERR_IO_BACKEND;
+    }
+
+    free(io_context);
+
+    // Call the parser to get the AST
+    struct ast *command_ast = get_ast(); // We'll pass the options later
+
+    // Call the executor with the AST
+    r = execution(command_ast);
+
+    // Return the execution return code (last command executed)
+    return r;
 }