How can I expand the full path of the current file to pass to a command in Vim?

Question

When I go to command mode and type

:!mycommand %

I get my command executed on the current file (% is expanded to the current

Answer 1

Get the name of the current file http://vim.wikia.com/wiki/Get_the_name_of_the_current_file

Set_working_directory_to_the_current_file http://vim.wikia.com/wiki/Set_working_directory_to_the_current_file