[smcdow]

Not really:

$ echo 'echo $0' > 'Hello, world!' $ chmod +x 'Hello, world!' $ 'Hello, world!' Hello, world! $ wc 'Hello, World!' 1 2 8 Hello, world!

8 bytes. I think that's probably as small as you can get.

[smcdow]

Oh, brother, formatting.<p> <pre> $ echo 'echo $0' > 'Hello, world!' $ chmod +x 'Hello, world!' $ 'Hello, world!' Hello, world! $ wc 'Hello, World!' 1 2 8 Hello, world! </pre>