In step 10 of the pg_upgrade doc at
https://www.postgresql.org/docs/9.6/static/pgupgrade.html, it uses this
example for rsyncing the main $PGDATA dir to the standby:
rsync --archive --delete --hard-links --size-only --no-inc-recursive
/opt/PostgreSQL/9.5/data \
/opt/PostgreSQL/9.6/data stand
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/10/static/sql-notify.html
Description:
LISTEN virtual;
NOTIFY virtual;
Asynchronous notification "virtual" received from server process with
PID
8448.
NOTIFY virtual, 'This is the payload';
