Autzoo.679
hacknews
utzoo!henry
Mon Jun  1 16:52:32 1981
minor shell upgrades
The "bye" command has at long last been made a shell primitive, equivalent
to control-D.  The shell's mail-checking code has also been smartened up
so that it does not do mail checks if the value of the MAIL environment
variable is null.  The sh(1) manual page has been updated to include the
current list of known bugs.

Since there were shells active at the time of the switch, this will not
be universally effective until everybody has signed off and on again at
least once.  /bin/bye will vanish once this has happened.