A super simple crate which queries the supported operating system for the number of bytes used. Returns None for unsupported operating systems. If your desired operating system isn't supported, please file an issue.
Additionally, there are helper functions which return the value as Kilo-/Mega-/Giga-/Tera- bytes where the values are based on 1024 bytes = 1 kilobyte.
This crate was created after trying to find this functionality from an existing crate, and instead I found instances of people asking for it. So I decided to make it. This can be helpful, such as trying to see if code changes result in less memory usage, for example.