/etc/apparmor.d/abstractions/ruby is in apparmor 2.10.95-0ubuntu2.
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 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | # ------------------------------------------------------------------
#
# Copyright (C) 2002-2006 Novell/SUSE
# Copyright (C) 2009 Canonical Ltd.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
/usr/lib{,32,64}/ruby/1.[89]{.[0-9],}/ r,
/usr/lib{,32,64}/ruby/1.[89]{.[0-9],}/**.rb r,
/usr/lib{,32,64}/ruby/1.[89]{.[0-9],}/*-linux/**.so mr,
/usr/{,local/}lib{,32,64}/ruby/{site,vendor}_ruby/1.[89]{.[0-9],}/ r,
/usr/{,local/}lib{,32,64}/ruby/{site,vendor}_ruby/1.[89]{.[0-9],}/**.rb r,
/usr/{,local/}lib{,32,64}/ruby/{site,vendor}_ruby/1.[89]{.[0-9],}/*-linux/**.so mr,
/usr/lib{,32,64}/ruby/gems/1.[89]{.[0-9],}/ r,
/usr/lib{,32,64}/ruby/gems/1.[89]{.[0-9],}/** r,
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