pio-system:tldr:01595

The command pio system prune is a command used in the PlatformIO (PIO) development platform. Its primary purpose is to remove unnecessary files and directories from the local system.

When executed, the command performs several cleanup tasks within the PlatformIO environment. Here's what each task entails:

1. Removing transient files: It deletes temporary files that were created during build processes, such as object files, intermediate build files, and dependencies that are no longer required.

2. Cleaning up the cache: PlatformIO maintains a cache to store downloaded library dependencies and build artifacts. This command clears the cache, reclaiming disk space and ensuring the latest versions of libraries are used.

3. Deleting outdated platforms: If there are any outdated or unused development platforms installed, the pio system prune command removes them. In PlatformIO, development platforms are the foundation for building firmware on specific hardware boards.

4. Removing unnecessary package managers: PlatformIO supports multiple package managers, such as Arduino IDE, CMSIS, and mbed. If there are any unused and unnecessary package managers, this command removes them, reducing clutter in the system.

Overall, pio system prune helps in maintaining a clean and optimized PlatformIO environment by deleting unnecessary files, cache data, outdated platforms, and package managers. It is useful for freeing up disk space and ensuring the latest libraries and platforms are being used in the development process.