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

[Alexis]

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?

Thanks in anticipation,


Alexis.