try
Inspect a command's effects before modifying your live system
...This makes it useful for experimenting with package installation, system changes, and other shell commands where users want a chance to review the outcome first. The project is careful not to position itself as a full security sandbox, since trusted commands can still make network calls and the tool is presented as a prototype rather than a complete isolation boundary. It supports multiple Linux distributions and can fall back to mergerfs or unionfs in environments where overlayfs on nested mounts does not work as expected. In practice,