diff --git a/rwx/__init__.py b/rwx/__init__.py
index 50c7cbe..ee9f51e 100644
--- a/rwx/__init__.py
+++ b/rwx/__init__.py
@@ -2,16 +2,14 @@
 
 __version__ = "0.0.1"
 
-from os import linesep
-
 
 class Class:
     """Root class."""
 
     def __repr__(self) -> str:
-        """Return machine-readable state.
+        """Represent object variables.
 
-        :return: state
+        :return: representation
         :rtype: str
         """
         name = self.__class__.__name__
@@ -20,14 +18,3 @@ class Class:
         ]
         arguments = ", ".join(attributes)
         return f"{name}({arguments})"
-
-    def __str__(self) -> str:
-        """Return human-readable state.
-
-        :return: state
-        :rtype: str
-        """
-        attributes = [
-            f"{k} = {v}" for k, v in vars(self).items() if not k.startswith("_")
-        ]
-        return linesep.join(attributes)
diff --git a/rwx/os/abstract.py b/rwx/os/abstract.py
index f4837fc..8b99c28 100644
--- a/rwx/os/abstract.py
+++ b/rwx/os/abstract.py
@@ -17,3 +17,10 @@ class OS(Class, ABC):
     @abstractmethod
     def get_name(self) -> str:
         """Return mandatory name."""
+
+    def __str__(self) -> str:
+        """Return root & name."""
+        return f"""\
+root = {self.root}
+name = {self.name}
+"""
diff --git a/rwx/os/pm/__init__.py b/rwx/os/pm/__init__.py
index 6236ee6..b3cacc4 100644
--- a/rwx/os/pm/__init__.py
+++ b/rwx/os/pm/__init__.py
@@ -21,3 +21,10 @@ class PM(Class, ABC):
     @abstractmethod
     def get_install_command(self) -> Command:
         """Command to install package(s)."""
+
+    def __str__(self) -> str:
+        """Return commands."""
+        return f"""\
+  clean = {self.clean}
+install = {self.install}
+"""
diff --git a/rwx/prj/__init__.py b/rwx/prj/__init__.py
index c0251e2..3cba90b 100644
--- a/rwx/prj/__init__.py
+++ b/rwx/prj/__init__.py
@@ -14,3 +14,12 @@ class Project(Class):
         self.file = self.raw.resolve()
         self.root: Path = self.file.parent
         self.name: str = self.root.name
+
+    def __str__(self) -> str:
+        """Return file, root & name."""
+        return f"""\
+ raw = {self.raw}
+file = {self.file}
+root = {self.root}
+name = {self.name}
+"""
diff --git a/rwx/ps/__init__.py b/rwx/ps/__init__.py
index 584c50d..601aca3 100644
--- a/rwx/ps/__init__.py
+++ b/rwx/ps/__init__.py
@@ -13,6 +13,13 @@ class Command(Class):
         self.raw = arguments
         self.flat: list[str] = []
 
+    def __str__(self) -> str:
+        """Return raw & flat."""
+        return f"""\
+ raw = {self.raw}
+flat = {self.flat}
+"""
+
 
 def get_tuples_args(*items: str | tuple[str, ...]) -> list[str]:
     """Turn arguments tuples into an arguments list."""