fix(0shell): remove mandatory use of low-level system calls and make …

…it bonus

subjects/0-shell/README.md

@@ -28,7 +28,7 @@ For this project you will only have to create a simple `Unix shell` where you ca
   - `mkdir`
   - `exit`
 
-> The commands need to be implemented from scratch, without calling any external binaries and exclusively using low-level system calls directly, without relying on built-in functions or libraries that abstract file operations?
+> The commands need to be implemented from scratch, without calling any external binaries.
 
 - You must manage the program interruption `Ctrl + D`.
 - The project has to be written in a compiled language (like C, Rust, Go or other), **interpreted languages (like Perl and others) are not allowed**.
@@ -48,6 +48,10 @@ This project will help you learn about:
 
 You can also do more bonus features like:
 
+- Implement the commands exclusively using `low-level system calls` avoiding built-in functions or libraries that abstract file operations.
+
+  - Avoid High-Level Abstractions: Instead of using functions like the Go `os.Open, os.Remove, and io.Copy`, you would use system calls directly through the `syscall` package using `syscall.Open, syscall.Close, syscall.Read, syscall.Write, syscall.Unlink`.
+
 - Manage the interruption `Ctrl + C`
 - Auto complete when you are writing
 - Add piping

subjects/0-shell/audit/README.md

@@ -2,7 +2,9 @@
 
 ###### Was the project written in a compiled programming language?
 
-###### Are the commands mentioned in the subject implemented from scratch, without calling any external binaries and exclusively using low-level system calls directly, without relying on built-in functions or libraries that abstract file operations?
+###### Are the commands mentioned in the subject implemented from scratch, without calling any external binaries?
+
+The use of execution commands (such as exec, system, os/exec, or similar functions) to call **external binaries** or utilities is strictly forbidden, as the project requires implementing all functionality from scratch without relying on external programs.
 
 #### Functional
 
@@ -76,7 +78,9 @@
 
 #### Bonus
 
-###### +Did the student added auto complete when you are writting the commands?
+###### + Did the student implemented the commands exclusively using `low-level system calls` avoiding built-in functions or libraries that abstract file operations?
+
+###### +Did the student added auto complete when you are writing the commands?
 
 ###### +Did the student added piping?