Add aliases to Ubuntu

In the .bash_profile file add a line like this:

alias emptytrash="rm -rf ~/.local/share/Trash/files/*"

Where emptytrash is the name of the alias.

In the terminal:

source .bash_profile

Done! Now after entering emptytrash the garbage can will be cleared.

If you use zsh, then instead of .bash_profile - make changes in .zshrc.