diff --git a/src/main.rs b/src/main.rs
index 8624fe9..86e6707 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,17 +1,16 @@
 mod parser;
 
-use std::io::{self, BufRead, Read, Stdout, Write};
+use std::io::{self, BufRead, Stdout, Write};
 use std::cmp;
 use std::collections::HashMap;
 use std::convert::TryInto;
-use std::ops::Add;
 use std::process;
 
 use termion::raw::{IntoRawMode, RawTerminal};
 use termion::input::TermRead;
-use termion::cursor::{self, DetectCursorPos};
+use termion::cursor::{DetectCursorPos};
 use termion::event::*;
-use termion::input::{MouseTerminal};
+// use termion::input::{MouseTerminal};
 
 struct Term {
     input: String,
@@ -72,6 +71,8 @@ impl Shell {
 
 fn main() {
     loop {
+        print!("$: ");
+        io::stdout().flush();
         let mut shell = collect();
         shell.term.input += "\n";
         parser::exec(&mut shell.term.input.as_bytes(), shell.ctx);
diff --git a/src/parser/ast.rs b/src/parser/ast.rs
index c07bf4c..f0164a5 100644
--- a/src/parser/ast.rs
+++ b/src/parser/ast.rs
@@ -1,12 +1,23 @@
 use crate::parser::tokens::Tokens;
-use crate::parser::vars::Variable;
 
 #[derive(Debug)]
 pub struct LetExpression {
-    pub key: String,
+    pub key: Box<Value>,
     pub value: Box<Value>
 }
 
+#[derive(Debug)]
+pub struct AndExpression {
+    pub first: Box<Expression>,
+    pub second: Box<Expression>
+}
+
+#[derive(Debug)]
+pub struct OrExpression {
+    pub first: Box<Expression>,
+    pub second: Box<Expression>
+}
+
 #[derive(Debug)]
 pub struct IfExpression {
     pub condition: Box<Expression>,
@@ -47,6 +58,7 @@ pub enum Value {
     ArrayFunction(DefinedFunction),
     StringFunction(DefinedFunction),
     Expressions(Vec<Expression>),
+    Expression(Expression),
     Values(Vec<Value>)
 }
 
@@ -84,108 +96,197 @@ pub enum CommandValue {
 pub enum Expression {
     LetExpression(LetExpression),
     Command(Vec<CommandValue>),
+    JobCommand(Box<Expression>),
     Function(FunctionDefinitionExpression),
     IfExpression(IfExpression),
     WhileExpression(WhileExpression),
     ForExpression(ForExpression),
     RedirectTargetExpression(RedirectTargetExpression),
     FileTargetExpression(FileTargetExpression),
-    FileSourceExpression(FileSourceExpression)
+    FileSourceExpression(FileSourceExpression),
+    Expressions(Vec<Expression>),
+    OrExpression(OrExpression),
+    AndExpression(AndExpression)
 }
 
+#[derive(Debug)]
 struct Tree {
     tokens: Vec<Tokens>,
     i: usize
 }
 
 impl Tree {
-    fn parse_call(&mut self) -> Vec<CommandValue> {
+    fn parse_call(&mut self, end: usize) -> Expression {
         let mut values: Vec<CommandValue> = Vec::new();
-        let mut token = self.get_current_token();
         let mut buf: Vec<Value> = Vec::new();
-
+        dbg!("call parse");
+        let mut token = self.get_current_token();
         loop {
             if matches!(token, Tokens::Space) {
                 if buf.len() > 0 {
                     values.push(CommandValue::Value(Value::Values(buf)));
                     buf = Vec::new();
                 }
-                token = self.next();
+                if self.i >= end - 1 { break }
+                self.i += 1;
+                token = self.get_current_token();
+                dbg!("skip space");
                 continue;
             }
-            let val = match token {
+            let val = match &token {
                 Tokens::Literal(str) => Value::Literal(str.clone()),
-                Tokens::SubStart => Value::Expressions(self.parse_sub()),
+                Tokens::SubStart => {
+                    let val = self.get_value(end);
+                    token = self.get_current_token();
+                    val
+                },
                 Tokens::StringVariable(str, _) => Value::Variable(str.clone()),
                 Tokens::ArrayVariable(str, _) => Value::ArrayVariable(str.clone()),
-                Tokens::FileWrite => {
-
+                Tokens::FileWrite => break,
+                Tokens::FileRead => break,
+                Tokens::RedirectInto => break,
+                Tokens::ParenthesisEnd => {
+                    if self.i >= end - 1 {
+                        break;
+                    }
+                    Value::Literal(token.to_str())
                 }
                 _ => {
                     Value::Literal(token.to_str())
                 }
             };
             buf.push(val);
-            if self.i == self.tokens.len() { break }
-            token = self.next();
+            if self.i >= end - 1 { break }
+            self.i += 1;
+            token = self.tokens.get(self.i).unwrap();
             if matches!(token, Tokens::CommandEnd(_)) { break }
+            dbg!("parse call loop");
         }
+        dbg!(&token);
+        match &token {
+            Tokens::FileWrite | Tokens::FileRead | Tokens::RedirectInto => self.i -= 1,
+            _ => {}
+        }
+        dbg!(&self);
+        // self.next();
         if buf.len() > 0 {
             values.push(CommandValue::Value(Value::Values(buf)));
         }
-        values
+        Expression::Command(values)
     }
 
-    fn parse_let(&self) -> LetExpression {
-        panic!("Let not yet implemented");
+    fn parse_let(&mut self, end: usize) -> Expression {
+        if end < self.i + 2 { panic!("Let needs name and equal sign (=) at minimum") }
+        self.inc();
+        let mut len = 0;
+        for token in &self.tokens[self.i..] {
+            match token {
+                Tokens::ExportSet => { break },
+                _ => len += 1
+            }
+        }
+        let key = Box::new(self.get_value(self.i + len));
+        self.inc(); // ????
+        self.inc();
+        let value = Box::new(self.get_value(end));
+        Expression::LetExpression(LetExpression { key, value })
     }
 
-    fn parse_read(&self) -> FileSourceExpression {
-        panic!("Read not yet implemented");
+    fn parse_read(&mut self, target: Option<Expression>, end: usize) -> Expression {
+        let target = match target {
+            Some(source) => Some(Box::new(source)),
+            None => None
+        };
+        self.i += 1;
+        let mut val_end = self.i;
+        let mut found_first = false;
+        for token in &self.tokens[self.i..] {
+            dbg!(&token);
+            val_end += 1;
+            match token {
+                Tokens::Space => if found_first { break },
+                Tokens::CommandEnd(_) => if !found_first { panic!("Unexpected command end") } else { break },
+                Tokens::FileRead => panic!("Unexpected file read (<)"),
+                Tokens::FileWrite => panic!("Unexpected file write (>)"),
+                _ => { found_first = true; }
+            }
+        }
+        dbg!(&self.tokens[self.i..val_end]);
+        val_end -= 1;
+        let source = Box::new(self.get_value(val_end));
+        self.inc();
+        Expression::FileSourceExpression(FileSourceExpression { source, target })
     }
 
-    fn parse_write(&self, source: Option<Expression>) -> FileTargetExpression {
+    fn parse_write(&mut self, source: Option<Expression>, end: usize) -> Expression {
         let source = match source {
             Some(source) => Some(Box::new(source)),
             None => None
         };
-
+        self.i += 1;
+        let mut val_end = self.i;
+        let mut found_first = false;
+        for token in &self.tokens[self.i..] {
+            val_end += 1;
+            match token {
+                Tokens::Space => if found_first { break },
+                Tokens::CommandEnd(_) => if !found_first { panic!("Unexpected command end") } else { break },
+                Tokens::FileRead => panic!("Unexpected file read (<)"),
+                Tokens::FileWrite => panic!("Unexpected file write (>)"),
+                _ => { found_first = true; }
+            }
+        }
+        val_end -= 1;
+        let target = Box::new(self.get_value(val_end));
+        self.inc();
+        Expression::FileTargetExpression(FileTargetExpression { source, target })
     }
 
-    fn parse_function(&self) -> FunctionDefinitionExpression {
+    fn parse_function(&self, end: usize) -> FunctionDefinitionExpression {
         panic!("Functions not yet implemented")
     }
 
-    fn parse_array_func(&self, str: String) -> DefinedFunction {
+    fn parse_array_func(&self, str: String, end: usize) -> DefinedFunction {
         panic!("Array functions not yet implemented");
     }
 
-    fn parse_for(&self) -> ForExpression {
+    fn parse_string_func(&self, str: String, end: usize) -> DefinedFunction {
+        panic!("Array functions not yet implemented");
+    }
+
+    fn parse_for(&self, end: usize) -> ForExpression {
         panic!("For loop not yet implemented");
     }
 
-    fn parse_if(&self) -> IfExpression {
+    fn parse_if(&self, end: usize) -> IfExpression {
         panic!("If not yet implemented");
     }
 
-    fn parse_while(&self) -> WhileExpression {
+    fn parse_while(&self, end: usize) -> WhileExpression {
         panic!("While not yet implemented");
     }
 
-    fn parse_sub(&self) -> Vec<Expression> {
-        panic!("Sub not yet implemented")
+    fn parse_sub(&mut self, end: usize) -> Vec<Expression> {
+        let mut expressions: Vec<Expression> = Vec::new();
+        loop {
+            if self.i >= end - 1 { break; }
+            expressions.push(self.get_expression(end));
+            dbg!(&expressions);
+        }
+        expressions
     }
 
-    fn get_value(&mut self) -> Value {
+    fn get_value(&mut self, end: usize) -> Value {
         let mut token = self.get_current_token();
         let mut values: Vec<Value> = Vec::new();
         let mut buf: Vec<Value> = Vec::new();
         loop {
             match token {
                 Tokens::Space => {
-                    if buf.len() == 0 { continue; }
+                    if buf.len() == 0 { token = self.inc().get_current_token(); continue; }
                     values.push(Value::Values(buf));
                     buf = Vec::new();
+                    if self.i >= end - 1 { break }
                 },
                 Tokens::CommandEnd(_) => break,
                 Tokens::Literal(str) => buf.push(Value::Literal(str.clone())),
@@ -194,57 +295,155 @@ impl Tree {
                 Tokens::Function => buf.push(Value::Literal(token.to_str())),
                 Tokens::FileWrite => buf.push(Value::Literal(token.to_str())),
                 Tokens::RedirectInto => panic!("Unexpected token REDIRECT (|)"),
-                Tokens::FunctionCallEnd => panic!("Unexpected token FUNCTION CALL END ())"),
+                Tokens::ParenthesisEnd => panic!("Unexpected token FUNCTION CALL END ())"),
                 Tokens::ArrayFunction(_) => panic!("Unexpected array function"),
                 Tokens::StringFunction(_) => panic!("Unexpected string function"),
-                Tokens::SubStart => /* SUB START PROCESS */,
-                Tokens::SubEnd => panic!("Unexpected token SUB END ())"),
+                Tokens::ParenthesisStart => panic!("Parenthesis not yet implemented"),
+                Tokens::SubStart => {
+                    let mut len = 1;
+                    let mut lvl = 1;
+                    self.inc();
+                    for token in &self.tokens[self.i..] {
+                        match token {
+                            Tokens::SubStart => lvl += 1,
+                            Tokens::ParenthesisEnd => lvl -= 1,
+                            _ => {}
+                        }
+                        if lvl == 0 {
+                            break;
+                        }
+
+                        if len + self.i == end { break }
+                        len += 1;
+                    }
+                    // self.inc();
+                    dbg!(&self);
+                    dbg!(len, lvl);
+                    if lvl != 0 {
+                        panic!("Sub not ended properly");
+                    }
+                    return Value::Expressions(self.parse_sub(self.i + len));
+                },
                 Tokens::Else => buf.push(Value::Literal(token.to_str())),
                 Tokens::End => buf.push(Value::Literal(token.to_str())),
-                Tokens::For => return Expression::ForExpression(self.parse_for()),
-                Tokens::If => return Expression::IfExpression(self.parse_if()),
-                Tokens::Let => return Expression::LetExpression(self.parse_let()),
-                Tokens::While => return Expression::WhileExpression(self.parse_while()),
-                Tokens::StringVariable(_, _) => return Expression::Command(self.parse_call()),
-                Tokens::ArrayVariable(_, _) => panic!("Unexpected array variable")
+                Tokens::For => buf.push(Value::Literal(token.to_str())),
+                Tokens::If => buf.push(Value::Literal(token.to_str())),
+                Tokens::Let => buf.push(Value::Literal(token.to_str())),
+                Tokens::While => buf.push(Value::Literal(token.to_str())),
+                Tokens::StringVariable(str, _) => {
+                    if buf.len() != 0 {
+                        values.push(Value::Values(buf));
+                        buf = Vec::new();
+                    }
+                    values.push(Value::Variable(str.clone()));
+                },
+                Tokens::ArrayVariable(str, _) => {
+                    if buf.len() != 0 {
+                        values.push(Value::Values(buf));
+                        buf = Vec::new();
+                    }
+                    values.push(Value::ArrayVariable(str.clone()));
+                },
+                Tokens::And => panic!("Unexpected AND (&&)"),
+                Tokens::Or => panic!("Unexpected OR (||)"),
+                Tokens::JobCommandEnd => panic!("Unexpected job command end (&)"),
             }
-            token = self.next();
+            if self.i >= end - 1 { break }
+            token = self.inc().get_current_token();
         }
+        if buf.len() > 0 {
+            values.push(Value::Values(buf));
+        }
+        Value::Values(values)
     }
 
-    fn get_expression(&mut self, is_sub: bool) -> Expression {
+    fn get_expression(&mut self, end: usize) -> Expression {
         let mut token = self.get_current_token();
+        dbg!("expr");
+        let mut expr: Option<Expression> = None;
         loop {
+            dbg!(&token);
             match token {
-                Tokens::Space => continue,
-                Tokens::CommandEnd(_) => continue,
-                Tokens::Literal(_) => return Expression::Command(self.parse_call()),
+                Tokens::Space => {self.inc();},
+                Tokens::CommandEnd(_) => {self.inc();},
+                Tokens::Literal(t) => if matches!(expr, Some(_)) {
+                    dbg!(t);
+                    dbg!(expr);
+                    panic!("Unexpected literal. After file redirect, you need to use a semicolon or newline.");
+                } else {
+                    expr = Some(self.parse_call(end));
+                    dbg!(&self);
+                },
                 Tokens::ExportSet => panic!("Unexpected token EXPORT_SET (=)"),
-                Tokens::FileRead => return Expression::FileSourceExpression(self.parse_read()),
-                Tokens::Function => return Expression::Function(self.parse_function()),
-                Tokens::FileWrite => return Expression::FileTargetExpression(self.parse_write(None)),
-                Tokens::RedirectInto => panic!("Unexpected token REDIRECT (|)"),
-                Tokens::FunctionCallEnd => panic!("Unexpected token FUNCTION CALL END ())"),
+                Tokens::Function => return Expression::Function(self.parse_function(end)),
+                Tokens::FileRead => expr = Some(self.parse_read(expr, end)),
+                Tokens::FileWrite => expr = Some(self.parse_write(expr, end)),
+                Tokens::RedirectInto => match expr {
+                    None => panic!("Unexpected token REDIRECT (|)"),
+                    Some(_) => {
+                        self.i += 1;
+                        dbg!(&self);
+                        expr = Some(Expression::RedirectTargetExpression(RedirectTargetExpression { source: Box::new(expr.unwrap()), target: Box::new(self.get_expression(end)) }));
+                        dbg!("after redirect");
+                    }
+                },
+                Tokens::ParenthesisStart => if matches!(expr, Some(_)) {
+                    dbg!(expr);
+                    panic!("Unexpected parenthesis. After file redirect, you need to use a semicolon or newline.");
+                } else {
+                    let mut len = 1;
+                    let mut lvl = 1;
+                    self.inc();
+                    for token in &self.tokens[self.i..] {
+                        match token {
+                            Tokens::ParenthesisStart => lvl += 1,
+                            Tokens::ParenthesisEnd => lvl -= 1,
+                            _ => {}
+                        }
+                        if lvl == 0 {
+                            break;
+                        }
+
+                        if len + self.i == end { break }
+                        len += 1;
+                    }
+                    if lvl != 0 {
+                        panic!("Parenthesis not ended properly.");
+                    }
+                    expr = Some(self.get_expression(self.i + len));
+                    dbg!(&self);
+                },
+                Tokens::ParenthesisEnd => panic!("Unexpected token PARENTHESIS END ())"),
                 Tokens::ArrayFunction(_) => panic!("Unexpected array function"),
                 Tokens::StringFunction(_) => panic!("Unexpected string function"),
-                Tokens::SubStart => return Expression::Command(self.parse_call()),
-                Tokens::SubEnd => if !is_sub { panic!("Unexpected token SUB END ())") },
+                Tokens::SubStart => return self.parse_call(end),
                 Tokens::Else => panic!("Unexpected token ELSE"),
                 Tokens::End => panic!("Unexpected token END"),
-                Tokens::For => return Expression::ForExpression(self.parse_for()),
-                Tokens::If => return Expression::IfExpression(self.parse_if()),
-                Tokens::Let => return Expression::LetExpression(self.parse_let()),
-                Tokens::While => return Expression::WhileExpression(self.parse_while()),
-                Tokens::StringVariable(_, _) => return Expression::Command(self.parse_call()),
-                Tokens::ArrayVariable(_, _) => panic!("Unexpected array variable")
+                Tokens::For => return Expression::ForExpression(self.parse_for(end)),
+                Tokens::If => return Expression::IfExpression(self.parse_if(end)),
+                Tokens::Let => return self.parse_let(end),
+                Tokens::While => return Expression::WhileExpression(self.parse_while(end)),
+                Tokens::StringVariable(_, _) => if matches!(expr, Some(_)) {
+                    dbg!(expr);
+                    panic!("Unexpected variable. After file redirect, you need to use a semicolon or newline.");
+                } else {
+                    expr = Some(self.parse_call(end));
+                    dbg!(&self);
+                },
+                Tokens::ArrayVariable(_, _) => panic!("Unexpected array variable"),
+                Tokens::And => panic!("And not yet implemented"),
+                Tokens::Or => panic!("Or not yet implemented"),
+                Tokens::JobCommandEnd => panic!("Jobs not yet implemented")
             }
-            token = self.next();
+            if self.i >= end - 1 { break }
+            token = self.get_current_token();
         }
+        expr.unwrap()
     }
 
-    fn next(&mut self) -> &Tokens {
+    fn inc(&mut self) -> &Self {
         self.i += 1;
-        self.get_current_token()
+        self
     }
     fn get_current_token(&self) -> &Tokens {
         self.tokens.get(self.i).unwrap()
@@ -255,12 +454,15 @@ impl Tree {
 }
 
 pub fn build_tree(tokens: Vec<Tokens>) -> Vec<Expression> {
+    println!("Building tree");
     let mut expressions: Vec<Expression> = Vec::new();
     let mut tree = Tree { tokens, i: 0 };
     loop {
         if tree.i == tree.tokens.len() - 1 { break; }
-        expressions.push(tree.get_expression());
+        let val = tree.get_expression(tree.tokens.len());
+        expressions.push(val);
     }
+    dbg!(&expressions);
 
     expressions
-}
\ No newline at end of file
+}
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index a1f8df1..6aa6280 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -2,19 +2,14 @@ pub mod vars;
 pub mod ast;
 pub mod tokens;
 
-use std::io;
-use std::io::Read;
-//use std::io::prelude::*;
-use utf8_chars::BufReadCharsExt;
-use crate::parser::ast::{build_tree, Expression};
-use crate::parser::tokens::{tokenize, Tokens};
+use crate::parser::ast::{build_tree};
+use crate::parser::tokens::{tokenize};
 
 pub fn exec(reader: &mut dyn std::io::BufRead, ctx: vars::Context) {
     let tokens = tokenize(reader).unwrap();
 
     dbg!(&tokens);
 
-    println!("Building tree");
     let expressions = build_tree(tokens);
 
     dbg!(&expressions);
@@ -22,4 +17,4 @@ pub fn exec(reader: &mut dyn std::io::BufRead, ctx: vars::Context) {
 
 pub fn escape(str: String) -> String {
     str
-}
\ No newline at end of file
+}
diff --git a/src/parser/tokens.rs b/src/parser/tokens.rs
index 22f9bbf..ed43a3c 100644
--- a/src/parser/tokens.rs
+++ b/src/parser/tokens.rs
@@ -1,6 +1,4 @@
-use std::fmt::format;
 use std::io;
-use crate::parser::vars;
 
 #[derive(Debug)]
 pub enum Tokens {
@@ -12,7 +10,8 @@ pub enum Tokens {
     ArrayVariable(String, bool),
     ArrayFunction(String),
     StringFunction(String),
-    FunctionCallEnd,
+    ParenthesisStart,
+    ParenthesisEnd,
     CommandEnd(char),
     If,
     Else,
@@ -21,10 +20,12 @@ pub enum Tokens {
     Function,
     End,
     SubStart,
-    SubEnd,
     RedirectInto,
     FileRead,
     FileWrite,
+    And,
+    Or,
+    JobCommandEnd
 }
 
 impl Tokens {
@@ -38,7 +39,8 @@ impl Tokens {
             "else" => Tokens::Else,
             "end" => Tokens::End,
             "$(" => Tokens::SubStart,
-            ")" => Tokens::SubEnd,
+            "(" => Tokens::ParenthesisStart,
+            ")" => Tokens::ParenthesisEnd,
             ">" => Tokens::FileWrite,
             "<" => Tokens::FileRead,
             "|" => Tokens::RedirectInto,
@@ -59,7 +61,6 @@ impl Tokens {
             Tokens::StringFunction(str) => format!("${}", str.as_str()),
             Tokens::CommandEnd(str) => str.to_string(),
             Tokens::ExportSet => "=".to_string(),
-            Tokens::FunctionCallEnd => ")".to_string(),
             Tokens::Function => "function".to_string(),
             Tokens::If => "if".to_string(),
             Tokens::Else => "else".to_string(),
@@ -67,10 +68,14 @@ impl Tokens {
             Tokens::For => "for".to_string(),
             Tokens::End => "end".to_string(),
             Tokens::SubStart => "$(".to_string(),
-            Tokens::SubEnd => ")".to_string(),
+            Tokens::ParenthesisStart => "(".to_string(),
+            Tokens::ParenthesisEnd => ")".to_string(),
             Tokens::RedirectInto => "|".to_string(),
             Tokens::FileRead => "<".to_string(),
-            Tokens::FileWrite => ">".to_string()
+            Tokens::FileWrite => ">".to_string(),
+            Tokens::And => "&&".to_string(),
+            Tokens::Or => "||".to_string(),
+            Tokens::JobCommandEnd => "&".to_string()
         }
     }
 }
@@ -84,7 +89,7 @@ fn read_var_ahead(i: usize, text: &String) -> (usize, Tokens) {
         x += 1;
         let letter: char = text.chars().nth(x).unwrap();
         match letter {
-            'a'...'z' | 'A'...'Z' | '0'...'9' | ':' => {
+            'a'..='z' | 'A'..='Z' | '0'..='9' | ':' | '_' => {
                 buf.push(letter.clone());
             }
             '}' => {
@@ -93,7 +98,7 @@ fn read_var_ahead(i: usize, text: &String) -> (usize, Tokens) {
                 }
                 break;
             }
-            _ => { if !parens_mode { break } }
+            _ => { if !parens_mode { break } else { panic!("Invalid variable name") } }
         }
     }
     let token = match text.chars().nth(i).unwrap() {
@@ -174,15 +179,23 @@ pub fn tokenize(reader: &mut dyn std::io::BufRead) -> io::Result<Vec<Tokens>> {
                 skipper = x - i - 1;
                 buf_add = false;
             },
-            ')' => if !quote_active && !double_quote_active {
+            '(' => if !quote_active && !double_quote_active && !escape_active {
                 if buf.len() > 0 {
                     tokens.push(Tokens::Literal(buf));
                     buf = String::new();
                 }
-                tokens.push(Tokens::FunctionCallEnd);
+                tokens.push(Tokens::ParenthesisStart);
+                buf_add = false;
+            }
+            ')' => if !quote_active && !double_quote_active && !escape_active {
+                if buf.len() > 0 {
+                    tokens.push(Tokens::Literal(buf));
+                    buf = String::new();
+                }
+                tokens.push(Tokens::ParenthesisEnd);
                 buf_add = false;
             },
-            'i' => if !quote_active && !double_quote_active {
+            'i' => if !quote_active && !double_quote_active && !escape_active {
                 if check_keyword(&text, i, "if") {
                     if buf.len() > 0 {
                         tokens.push(Tokens::Literal(buf));
@@ -193,7 +206,7 @@ pub fn tokenize(reader: &mut dyn std::io::BufRead) -> io::Result<Vec<Tokens>> {
                     buf_add = false;
                 }
             },
-            'e' => if !quote_active && !double_quote_active {
+            'e' => if !quote_active && !double_quote_active && !escape_active {
                 if check_keyword(&text, i, "else") {
                     if buf.len() > 0 {
                         tokens.push(Tokens::Literal(buf));
@@ -212,7 +225,18 @@ pub fn tokenize(reader: &mut dyn std::io::BufRead) -> io::Result<Vec<Tokens>> {
                     buf_add = false;
                 }
             },
-            'w' => if !quote_active && !double_quote_active {
+            'l' => if !quote_active && !double_quote_active && !escape_active {
+                if check_keyword(&text, i, "let") {
+                    if buf.len() > 0 {
+                        tokens.push(Tokens::Literal(buf));
+                        buf = String::new();
+                    }
+                    skipper = 3;
+                    tokens.push(Tokens::Let);
+                    buf_add = false;
+                }
+            },
+            'w' => if !quote_active && !double_quote_active && !escape_active {
                 if check_keyword(&text, i, "while") {
                     if buf.len() > 0 {
                         tokens.push(Tokens::Literal(buf));
@@ -223,7 +247,7 @@ pub fn tokenize(reader: &mut dyn std::io::BufRead) -> io::Result<Vec<Tokens>> {
                     buf_add = false;
                 }
             },
-            'f' => if !quote_active && !double_quote_active {
+            'f' => if !quote_active && !double_quote_active && !escape_active {
                 if check_keyword(&text, i, "for") {
                     if buf.len() > 0 {
                         tokens.push(Tokens::Literal(buf));
@@ -239,7 +263,25 @@ pub fn tokenize(reader: &mut dyn std::io::BufRead) -> io::Result<Vec<Tokens>> {
                     tokens.push(Tokens::Literal(buf));
                     buf = String::new();
                 }
-                tokens.push(Tokens::RedirectInto);
+                if check_keyword(&text, i, "||") {
+                    skipper = 1;
+                    tokens.push(Tokens::Or);
+                } else {
+                    tokens.push(Tokens::RedirectInto);
+                }
+                buf_add = false;
+            },
+            '&' => if !escape_active && !quote_active && !double_quote_active {
+                if buf.len() > 0 {
+                    tokens.push(Tokens::Literal(buf));
+                    buf = String::new();
+                }
+                if check_keyword(&text, i, "&&") {
+                    skipper = 1;
+                    tokens.push(Tokens::And);
+                } else {
+                    tokens.push(Tokens::JobCommandEnd);
+                }
                 buf_add = false;
             },
             '>' => if !escape_active && !quote_active && !double_quote_active {
@@ -292,4 +334,4 @@ pub fn tokenize(reader: &mut dyn std::io::BufRead) -> io::Result<Vec<Tokens>> {
     }
 
     Ok(tokens)
-}
\ No newline at end of file
+}
diff --git a/src/parser/vars.rs b/src/parser/vars.rs
index 236dc81..9611a23 100644
--- a/src/parser/vars.rs
+++ b/src/parser/vars.rs
@@ -1,7 +1,5 @@
 use std::collections::HashMap;
-use std::ops::{Add, Deref};
 use crate::parser::ast::FunctionDefinitionExpression;
-use crate::parser::escape;
 
 #[derive(Debug)]
 pub enum Variable {
@@ -30,7 +28,7 @@ impl Variable {
             Variable::U128(num) => num.to_string(),
             Variable::F32(num) => num.to_string(),
             Variable::F64(num) => num.to_string(),
-            Variable::HMap(map) => {
+            Variable::HMap(_map) => {
                 String::from("[Object object]")
             },
             Variable::Array(vars) => {
@@ -122,4 +120,4 @@ impl Context {
         let mut func = &mut self.scopes.last_mut().unwrap().func;
         func.insert(key, val);
     }
-}
\ No newline at end of file
+}