/usr/share/postgresql/9.4/extension/pgagent.control is in pgagent 3.4.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | # pgagent extension
comment = 'A PostgreSQL job scheduler'
default_version = '3.4'
relocatable = false
superuser = false
schema = pgagent
|