This file is indexed.

/etc/news/expire.ctl is in inn 1:1.7.2q-44.1ubuntu2.

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
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
##  $Revision: 1.9 $
##  expire.ctl - expire control file
##  Format:
##	/remember/:<keep>
##	<patterns>:<modflag>:<keep>:<default>:<purge>
##  First line gives history retention; other lines specify expiration
##  for newsgroups.  Must have a "*:A:..." line which is the default.
##	<patterns>	wildmat-style patterns for the newsgroups
##	<modflag>	Pick one of M U A -- modifies pattern to be only
##			moderated, unmoderated, or all groups
##	<keep>		Mininum number of days to keep article
##	<default>	Default number of days to keep the article
##	<purge>		Flush article after this many days
##  <keep>, <default>, and <purge> can be floating-point numbers or the
##  word "never."  Times are based on when received unless -p is used;
##  see expire.8

##  If article expires before 14 days, we still remember it for 14 days in
##  case we get offered it again.  Depending on what you use for the innd
##  -c flag and how paranoid you are about old news, you might want to
##  make this 28, 30, etc.
/remember/:14

##  Keep for 1-10 days, allow Expires headers to work up to 60 days.
*:A:1:10:60

##  Some particular groups stay forever.
# Keep FAQ's for a month, so they're always available
*.answers:M:1:35:90
news.announce.*:M:1:35:90

# Some other recommendations.  Uncomment if you want
# .announce groups tend to be low-traffic, high signal.
# *.announce:M:1:30:90
# Weather forecasts
# *.weather:A:1:2:7
# test posts
# *.test:A:1:1:1

## misc trash
control:A:1:14:60
control.cancel:A:1:1:1
junk:A:1:1:60
local.*:A:1:14:60

##  Some particular groups stay forever.
# dc.dining*:A:never:never:never
# uunet*:A:never:never:never