The trash-cli set of tools are a great way to view, add and manage files in the Trash directory. One of the few features missing is a way to view the size of the Trash directory.
This can be done easily using the
du command on the Trash directory:
$ du -hs ~/.local/share/Trash
If you use this frequently, you may want to add an
alias to your shell:
alias trash-size="du --human-readable --summarize ~/.local/share/Trash"
Tried with: Ubuntu 12.04 LTS