Cartshell is a shell used to learn more shells in Unix-like operating systems. It is not intended for Windows machines. It features a simple print-eval-execute loop along with many different builtin commands—but there is more to come.
One goal I have for this project is to make it POSIX compliant. Here are some ways in which I intend to do that:
- Use the appropriate Feature Test Macros (
man 7 feature_test_macros) - Avoid including any non-standard libraries
- Use correct compilations flags that are standard
Since simplicity and scalability will be a guiding-principle of this project, developers can fork this repository to make their own shells with different builtins or other functionality.
Clone the repository using gh (or traditionally git):
gh repo clone Carter907/cartshell
Change dir and run the program:
cd cartshell && make run
Example session:
> echo hi
hi
> timenow
Tue Mar 10 09:49:30 2026
> schedtime
-- shell has executed for 0.049173 secs on a CPU --
>