diff --git a/.gitignore b/.gitignore
index 0800ae8..90c0433 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 __pycache__
 /tmp
-/.vscode
+/.idea
 /dist
diff --git a/pyproject.toml b/pyproject.toml
index ccd0aa1..ac386d1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,35 +1,32 @@
 [build-system]
-requires = ["hatchling"]
-build-backend = "hatchling.build"
+requires = ['hatchling']
+build-backend = 'hatchling.build'
 
 [project]
 authors = [
-    { name = "Marc Beninca", email = "git@marc.beninca.link" },
+    { name = 'Marc Beninca', email = 'git@marc.beninca.link' },
 ]
 maintainers = [
-    { name = "Marc Beninca", email = "git@marc.beninca.link" },
+    { name = 'Marc Beninca', email = 'git@marc.beninca.link' },
 ]
 classifiers = [
-    "Programming Language :: Python :: 3",
-    "License :: OSI Approved :: GNU Affero General Public License v3",
-    "Operating System :: OS Independent",
+    'Programming Language :: Python :: 3',
+    'License :: OSI Approved :: GNU Affero General Public License v3',
+    'Operating System :: OS Independent',
 ]
 dependencies = []
-description = "Read Write eXecute"
-dynamic = ["version"]
+description = 'Read Write eXecute'
+dynamic = ['version']
 keywords = []
-license-files = { paths = ["license.md"] }
-name = "rwx"
-readme = "readme.md"
-requires-python = ">= 3.10"
+license-files = { paths = ['license.md'] }
+name = 'rwx'
+readme = 'readme.md'
+requires-python = '>= 3.10'
 
 [project.scripts]
-# command = "package.module:function"
+# command = 'package.module:function'
 
 [project.urls]
 
 [tool.hatch.version]
-path = "rwx/__init__.py"
-
-[tool.ruff]
-select = ["ALL"]
+path = 'rwx/__init__.py'
diff --git a/rwx/__init__.py b/rwx/__init__.py
index a721b9a..b8023d8 100644
--- a/rwx/__init__.py
+++ b/rwx/__init__.py
@@ -1,2 +1 @@
-"""Read Write eXecute."""
-__version__ = "0.0.1"
+__version__ = '0.0.1'
diff --git a/rwx/__main__.py b/rwx/__main__.py
index 519fb8e..0f73041 100755
--- a/rwx/__main__.py
+++ b/rwx/__main__.py
@@ -1,14 +1,18 @@
 #! /usr/bin/env python3
-from pathlib import Path
+
+import os
+
 import fs
-if __name__ == "__main__":
-    file_path = Path(__file__).resolve()
-    root_path = file_path.parent
-    directory_path = root_path / "tmp"
-    file_path = directory_path / "file"
+
+
+if __name__ == '__main__':
+    file_path = os.path.realpath(__file__)
+    root_path = os.path.dirname(file_path)
+    directory_path = os.path.join(root_path, 'tmp')
+    file_path = os.path.join(directory_path, 'file')
 
     fs.wipe(directory_path)
     fs.make_directory(directory_path)
-    fs.write(file_path, "Martine écrit beaucoup.")
+    fs.write(file_path, 'Martine écrit beaucoup.')
     fs.empty_file(file_path)
-    fs.write(file_path, "Martine écrit moins.")
+    fs.write(file_path, 'Martine écrit moins.')
diff --git a/rwx/cmd/__init__.py b/rwx/cmd/__init__.py
index de764fa..9403d24 100644
--- a/rwx/cmd/__init__.py
+++ b/rwx/cmd/__init__.py
@@ -4,11 +4,12 @@ packages: list[str] = []
 
 def need(command: str) -> None:
     match command:
-        case "debootstrap":
-            package = "debootstrap"
-        case "mksquashfs" | "unsquashfs":
-            package = "squashfs-tools"
+        case 'debootstrap':
+            package = 'debootstrap'
+        case 'mksquashfs' | 'unsquashfs':
+            package = 'squashfs-tools'
         case _:
             package = None
-    if package and package not in packages:
-        packages.append(package)
+    if package:
+        if package not in packages:
+            packages.append(package)
diff --git a/rwx/cmd/squashfs/__init__.py b/rwx/cmd/squashfs/__init__.py
index 343461e..637890a 100644
--- a/rwx/cmd/squashfs/__init__.py
+++ b/rwx/cmd/squashfs/__init__.py
@@ -1,15 +1,14 @@
 import ps
-
 import rwx.cmd
 
-rwx.cmd.need("mksquashfs")
+rwx.cmd.need('mksquashfs')
 
 
 def mksquashfs(input_root: str, output_file: str):
     ps.run([
-        "mksquashfs",
+        'mksquashfs',
         input_root,
         output_file,
-        "-comp", "zstd",
-        "-Xcompression-level", str(18),
+        '-comp', 'zstd',
+        '-Xcompression-level', str(18),
     ])
diff --git a/rwx/deb/__init__.py b/rwx/deb/__init__.py
index e9c6a9e..a773123 100644
--- a/rwx/deb/__init__.py
+++ b/rwx/deb/__init__.py
@@ -1,20 +1,20 @@
 import cmd
-
 import ps
 
-cmd.need("debootstrap")
+cmd.need('debootstrap')
 
-BOOTSTRAP_ARCHITECTURE = "amd64"
-BOOTSTRAP_VARIANT = "minbase"
+BOOTSTRAP_ARCHITECTURE = 'amd64'
+BOOTSTRAP_VARIANT = 'minbase'
 
 
 def bootstrap(root_path: str, suite: str, mirror_location: str):
     command = [
-        ("debootstrap",),
-        ("--arch", BOOTSTRAP_ARCHITECTURE),
-        ("--variant", BOOTSTRAP_VARIANT),
+        ('debootstrap',),
+        ('--arch', BOOTSTRAP_ARCHITECTURE),
+        ('--variant', BOOTSTRAP_VARIANT),
         (suite,),
         (root_path,),
         (mirror_location,),
     ]
-    return ps.run(command)
+    completed_process = ps.run(command)
+    return completed_process
diff --git a/rwx/err/__init__.py b/rwx/err/__init__.py
deleted file mode 100644
index b996913..0000000
--- a/rwx/err/__init__.py
+++ /dev/null
@@ -1,2 +0,0 @@
-class Exception(Exception):
-    pass
diff --git a/rwx/fs/__init__.py b/rwx/fs/__init__.py
index e769358..ecaebf0 100644
--- a/rwx/fs/__init__.py
+++ b/rwx/fs/__init__.py
@@ -3,34 +3,34 @@ import shutil
 
 from rwx import ps
 
-CHARSET = "UTF-8"
+CHARSET = 'UTF-8'
 
 
 def create_image(file_path: str, size_bytes: int):
     ps.run(
-        ("qemu-img", "create"),
-        ("-f", "qcow2"),
+        ('qemu-img', 'create'),
+        ('-f', 'qcow2'),
         (file_path, size_bytes),
     )
 
 
 def empty_file(path: str):
-    write(path, "")
+    write(path, str())
 
 
 def get_mount_uuid(path: str):
     return ps.run_line(
-        ("findmnt",),
-        ("--noheadings",),
-        ("--output", "UUID"),
+        ('findmnt',),
+        ('--noheadings',),
+        ('--output', 'UUID'),
         (path,),
     )
 
 
 def get_path_mount(path: str):
     return ps.run_line(
-        ("stat",),
-        ("--format", "%m"),
+        ('stat',),
+        ('--format', '%m'),
         (path,),
     )
 
@@ -44,7 +44,7 @@ def make_directory(path: str):
 
 
 def read_file(file_path: str):
-    with open(file_path, "br") as file_object:
+    with open(file_path, 'br') as file_object:
         return file_object.read()
 
 
@@ -66,5 +66,5 @@ def wipe(path: str):
 
 
 def write(file_path: str, text: str, charset=CHARSET):
-    with open(file_path, "bw") as file_object:
+    with open(file_path, 'bw') as file_object:
         file_object.write(text.encode(charset))
diff --git a/rwx/grub/__init__.py b/rwx/grub/__init__.py
index 57e313c..b931ee3 100644
--- a/rwx/grub/__init__.py
+++ b/rwx/grub/__init__.py
@@ -1,33 +1,32 @@
 import cmd
-
 import ps
 
-cmd.need("grub-mkimage")
+cmd.need('grub-mkimage')
 
-COMPRESSION = "xz"
+COMPRESSION = 'xz'
 ENV_BYTES = 1024
-ENV_COMMENT = "#"
-ENV_HEADER = f"""{ENV_COMMENT} GRUB Environment Block
-"""
+ENV_COMMENT = '#'
+ENV_HEADER = f'''{ENV_COMMENT} GRUB Environment Block
+'''
 MODULES = {
-    "i386-pc": [
-        ("biosdisk",),
-        ("ntldr",),
-    ],
+    'i386-pc': [
+        ('biosdisk',),
+        ('ntldr',),
+    ]
 }
 
 
 def make_image(image_format: str, image_path: str, modules: list[str],
-               memdisk_path: str, pubkey_path: str | None = None) -> None:
+               memdisk_path: str, pubkey_path: str = None) -> None:
     args = [
-        ("grub-mkimage",),
-        ("--compress", COMPRESSION),
-        ("--format", image_format),
-        ("--output", image_path),
-        ("--memdisk", memdisk_path),
+        ('grub-mkimage',),
+        ('--compress', COMPRESSION),
+        ('--format', image_format),
+        ('--output', image_path),
+        ('--memdisk', memdisk_path),
     ]
     if pubkey_path:
-        args.append(("--pubkey", pubkey_path))
+        args.append(('--pubkey', pubkey_path))
     args.extend(modules)
     if modules := MODULES.get(image_format, None):
         args.extend(modules)
diff --git a/rwx/log/__init__.py b/rwx/log/__init__.py
index 3502ab5..2cf0b09 100644
--- a/rwx/log/__init__.py
+++ b/rwx/log/__init__.py
@@ -2,27 +2,21 @@ import logging
 import sys
 
 
-def get_file_logger(name: str) -> logging.Logger:
+def get_logger(name: str) -> logging.Logger:
     formatter = logging.Formatter(
-        "%(name)s: %(asctime)s | %(levelname)s | %(filename)s:%(lineno)s | %(process)d >>> %(message)s",
+        "%(name)s: %(asctime)s | %(levelname)s | %(filename)s:%(lineno)s | %(process)d >>> %(message)s"
     )
-    #
+
+    # file_handler = logging.FileHandler('log.txt')
+    # file_handler.setFormatter(formatter)
+    # file_handler.setLevel(logging.INFO)
+
     out_handler = logging.StreamHandler(stream=sys.stdout)
     out_handler.setFormatter(formatter)
     out_handler.setLevel(logging.INFO)
-    #
+
     logger = logging.getLogger(name)
+    # logger.addHandler(file_handler)
     logger.addHandler(out_handler)
     logger.setLevel(logging.INFO)
-    #
     return logger
-def get_stream_logger() -> logging.Logger:
-    out_handler = logging.StreamHandler(stream=sys.stdout)
-    out_handler.setLevel(logging.INFO)
-    #
-    logger = logging.getLogger()
-    logger.addHandler(out_handler)
-    logger.setLevel(logging.INFO)
-    #
-    return logger
-stream = get_stream_logger()
diff --git a/rwx/prj/__init__.py b/rwx/prj/__init__.py
index 227a686..f0a2fe5 100644
--- a/rwx/prj/__init__.py
+++ b/rwx/prj/__init__.py
@@ -2,7 +2,7 @@ from os import path
 
 
 class Project:
-    def __init__(self, file_path: str) -> None:
+    def __init__(self, file_path: str):
         self.file: str = path.realpath(file_path)
         self.root: str = path.dirname(self.file)
         self.name: str = path.basename(self.root)
diff --git a/rwx/prj/sphinx.py b/rwx/prj/sphinx.py
index ccb8d0f..4da1ebf 100644
--- a/rwx/prj/sphinx.py
+++ b/rwx/prj/sphinx.py
@@ -1,5 +1,4 @@
 from os import path
-
 from sphinx.cmd.build import build_main
 
 from rwx.fs import wipe
@@ -7,11 +6,11 @@ from rwx.prj import Project
 
 
 class SphinxProject(Project):
-    def __init__(self, file_path: str) -> None:
+    def __init__(self, file_path: str):
         super().__init__(file_path)
 
     def build(self):
-        output_root: str = path.join(self.root, "out")
+        output_root: str = path.join(self.root, 'out')
         wipe(output_root)
         arguments: list[str] = [
             "-E",
diff --git a/rwx/txt/__init__.py b/rwx/txt/__init__.py
index 369202c..edb0624 100644
--- a/rwx/txt/__init__.py
+++ b/rwx/txt/__init__.py
@@ -1 +1 @@
-CHARSET = "UTF-8"
+CHARSET = 'UTF-8'