trash-cli is a command-line interface implementing the FreeDesktop.org Trash specification. It provides five primary commands: trash-put (move files to trash), trash-list (list trashed files), trash-restore (interactively restore files), trash-empty (empty trash directories), and trash-rm (remove specific trashed files). The architecture is modular, with separate packages for each command (trashcli/put/, trashcli/list/, trashcli/restore/, trashcli/empty/, trashcli/rm/) sharing common utilities from trashcli/lib/, trashcli/fslib/, and trashcli/fstab/. Key entry points are the main() functions in each command's main.py module, invoked via shell scripts (trash, trash-put, etc.). Data flows involve reading trash directories (per the spec's rules for $XDG_DATA_HOME/Trash, .Trash/$uid, .Trash-$uid), parsing .trashinfo files, and performing file operations (move, delete, restore) with security checks (sticky bits, symlinks, world-writable directories). External dependencies include psutil (for volume detection), six (Python 2/3 compatibility), and optionally shtab (shell completion). The codebase is well-tested with a comprehensive fake filesystem for unit tests and integration tests covering edge cases.