Command to move a file to Trash via Terminal

You can use gvfs-trash command from the package gvfs-bin which is installed by default in Ubuntu.

Move file to trash:

gvfs-trash filename

See the content of the trash:

gvfs-ls trash://

Empty the trash:

gvfs-trash --empty

Install trash-cli – sudo apt-get install trash-cli

Put files in the trash with: trash file1 file2

List files in trash: trash-list

Empty trash with: trash-empty

As of 2017, gvfs-trash seems to be deprecated.

$ touch test
$ gvfs-trash test
This tool has been deprecated, use 'gio trash' instead.
See 'gio help trash' for more info.

You should use gio, specifically

gio trash

is the recommended way.