You gave it away :)  Half the fun is getting the search right.

The old kermit program from Columbia has an implementation in portable (for
its time) C.

On Sat, Jul 31, 2021 at 12:03 PM Clem Cole <clemc@ccc.com> wrote:

> https://github.com/PDP-10/sri-nic/blob/master/files/fs/c/ccmd/ccmdmd.unx
>
> On Sat, Jul 31, 2021 at 11:46 AM Richard Salz <rich.salz@gmail.com> wrote:
>
>> Look for "comnd jsys" that exact spelling. Source code is around.
>>
>>
>>>