diff --git a/bellos_scripts/basic_math.bellos b/bellos_scripts/basic_math.bellos
index 02c1db2..74adac5 100644
--- a/bellos_scripts/basic_math.bellos
+++ b/bellos_scripts/basic_math.bellos
@@ -1,22 +1,22 @@
 #!/usr/bin/env bellos
-# File: file_operations.bellos
 
+# File: file_operations.bellos
 # Demonstrating file operations
 
 # Writing to a file
-echo "This is a test file" > test.txt
-echo "Adding another line" > test.txt
+write test.txt "This is a test file"
+append test.txt "Adding another line"
 
 # Reading from a file
 echo "Contents of test.txt:"
-cat test.txt
+read test.txt
 
-# Using a while loop to read file line by line
+# Using a loop to read file line by line
 echo "Reading file line by line:"
-while read -r line
+for line in $(read_lines test.txt)
 do
-    echo "Line: $line"
-done < test.txt
+    echo "Line: ${line}"
+done
 
 # Cleaning up
-rm test.txt
+delete test.txt
diff --git a/src/bellos.rs b/src/bellos.rs
index c5b945d..5d1af5f 100644
--- a/src/bellos.rs
+++ b/src/bellos.rs
@@ -6,9 +6,8 @@ mod utilities;
 use crate::interpreter::interpreter::Interpreter;
 use crate::lexer::lexer::Lexer;
 use crate::parser::parser::Parser;
-use crate::utilities::Token;
+use crate::utilities::utilities::Token;
 
-use glob::glob;
 use std::env;
 use std::fs::File;
 use std::io::{self, BufRead, Write};
diff --git a/src/interpreter/interpreter.rs b/src/interpreter/interpreter.rs
index 70036e4..bb26122 100644
--- a/src/interpreter/interpreter.rs
+++ b/src/interpreter/interpreter.rs
@@ -13,7 +13,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-use crate::utilities::ASTNode;
+use crate::utilities::utilities::ASTNode;
 
 use glob::glob;
 use std::collections::HashMap;
diff --git a/src/lexer/lexer.rs b/src/lexer/lexer.rs
index 03456d8..9988811 100644
--- a/src/lexer/lexer.rs
+++ b/src/lexer/lexer.rs
@@ -13,7 +13,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-use crate::utilities::Token;
+use crate::utilities::utilities::Token;
 
 pub struct Lexer {
     input: Vec<char>,
diff --git a/src/parser/parser.rs b/src/parser/parser.rs
index 101d4be..a639a3e 100644
--- a/src/parser/parser.rs
+++ b/src/parser/parser.rs
@@ -13,7 +13,7 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-use crate::utilities::{ASTNode, Token};
+use crate::utilities::utilities::{ASTNode, Token};
 
 pub struct Parser {
     tokens: Vec<Token>,
diff --git a/src/utilities/mod.rs b/src/utilities/mod.rs
new file mode 100644
index 0000000..89db166
--- /dev/null
+++ b/src/utilities/mod.rs
@@ -0,0 +1 @@
+pub mod utilities;
diff --git a/src/utilities/utilities.rs b/src/utilities/utilities.rs
new file mode 100644
index 0000000..b30f283
--- /dev/null
+++ b/src/utilities/utilities.rs
@@ -0,0 +1,75 @@
+// Copyright (C) 2024 Bellande Architecture Mechanism Research Innovation Center, Ronaldson Bellande
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#[derive(Debug, Clone, PartialEq)]
+pub enum Token {
+    Word(String),
+    Assignment,
+    Pipe,
+    Redirect(String),
+    LeftParen,
+    RightParen,
+    Semicolon,
+    NewLine,
+    If,
+    Then,
+    Else,
+    Fi,
+    While,
+    Do,
+    Done,
+    For,
+    In,
+    Function,
+    Ampersand,
+}
+
+#[derive(Debug, Clone)]
+pub enum ASTNode {
+    Command {
+        name: String,
+        args: Vec<String>,
+    },
+    Assignment {
+        name: String,
+        value: String,
+    },
+    Pipeline(Vec<ASTNode>),
+    Redirect {
+        node: Box<ASTNode>,
+        direction: String,
+        target: String,
+    },
+    Block(Vec<ASTNode>),
+    If {
+        condition: Box<ASTNode>,
+        then_block: Box<ASTNode>,
+        else_block: Option<Box<ASTNode>>,
+    },
+    While {
+        condition: Box<ASTNode>,
+        block: Box<ASTNode>,
+    },
+    For {
+        var: String,
+        list: Vec<String>,
+        block: Box<ASTNode>,
+    },
+    Function {
+        name: String,
+        body: Box<ASTNode>,
+    },
+    Background(Box<ASTNode>),
+}