Vim: execute current file?

Question

If I have a file with a shebang line (e.g. #!/bin/bash) open in Vim and the file has execute permissions (i.e. chmod +x) I know I can type this to exec

Answer 1

:!%:p

,without the spaces, is shorter.

If you want an even shorter shortcut, you can create a custom mapping:

nnoremap  :!%:p

or the more "mnemonic":

nnoremap r :!%:p