/usr/share/postgresql/9.1/extension/intagg.control is in postgresql-contrib-9.1 9.1.3-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | # intagg extension
comment = 'integer aggregator and enumerator (obsolete)'
default_version = '1.0'
relocatable = true
|