"Type what I tell you" joke

While trying to diagnose a problem over the phone I told the user to type out his autoexec. bat file.

He said it said "File not found".

I told him to do a dir.

I asked him if he saw autoexec. bat listed.

He said, "Well it says autoexec, then there's some spaces, but no dot, and then it says bat."

I said type this in "type autoexec. bat".

Again he got "File not found".

I asked him to tell me exactly what he typed.

He said, "I typed just what you told me: `type autoexecdotbat'.