K 10
svn:author
V 7
asomers
K 8
svn:date
V 27
2019-08-19T01:14:11.373937Z
K 7
svn:log
V 210
periodic: replace "tty" with "test -t 0"

Apparently using tty for this purpose has been deprecated since 4.4 Lite.

Reviewed by:	cy
MFC after:	1 month
Differential Revision:	https://reviews.freebsd.org/D21318

END