[TUHS] Initial uses of the '-d' convention for daemons?

[Jonathan Gray]

On Sat, Feb 04, 2023 at 03:10:26PM +1100, Alexis wrote:
> 
> Hi all,
> 
> Firstly, thanks to Warren for adding me to the list!
> 
> The 6th Edition manual refers to 'cron', not 'crond' (even though cron was
> indeed referred to as a 'daemon'). By 4.2BSD, however, we have things like
> 'telnetd' and 'tftpd'.
> 
> Does anyone have any pointers as to when and where the '-d' convention
> started to be used?

The 2nd edition manual has:
dpd(I) spawn data-phone daemon

by the 5th edition, there was also:
lpd(VIII) line printer daemon

The term dates back to CTSS and Multics.