/usr/share/augeas/lenses/dist/dpkg.aug is in augeas-lenses 1.2.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Module: Dpkg
Parses /etc/dpkg/dpkg.cfg
Author: Robin Lee Powell <rlpowell@digitalkingdom.org>
About: License
This file, and the attendant test_dpgk.aug, are explicitely
placed in the public domain.
About: Description
dpkg.cfg is a simple list of options, the same ones as the
command line options, with or without a value.
The tree is a list of either comments or option/value pairs by
name. Use "set" to set an option with a value, and "clear" for a
bare option.
About: Usage Example
(start code)
$ augtool -n
augtool> ls /files/etc/dpkg/dpkg.cfg
#comment[1] = dpkg configuration file
#comment[2] = This file can contain default options for dpkg. All command-line
#comment[3] = options are allowed. Values can be specified by putting them after
#comment[4] = the option, separated by whitespace and/or an `=' sign.
#comment[5] = Do not enable debsig-verify by default; since the distribution is not using
#comment[6] = embedded signatures, debsig-verify would reject all packages.
no-debsig = (none)
#comment[7] = Log status changes and actions to a file.
log = /var/log/dpkg.log
augtool> get /files/etc/dpkg/dpkg.cfg/no-debsig
/files/etc/dpkg/dpkg.cfg/no-debsig (none)
augtool> get /files/etc/dpkg/dpkg.cfg/log
/files/etc/dpkg/dpkg.cfg/log = /var/log/dpkg.log
augtool> clear /files/etc/dpkg/dpkg.cfg/testopt
augtool> set /files/etc/dpkg/dpkg.cfg/testopt2 test
augtool> save
Saved 1 file(s)
augtool>
$ cat /etc/dpkg/dpkg.cfg.augnew
# dpkg configuration file
#
# This file can contain default options for dpkg. All command-line
# options are allowed. Values can be specified by putting them after
# the option, separated by whitespace and/or an `=' sign.
#
# Do not enable debsig-verify by default; since the distribution is not using
# embedded signatures, debsig-verify would reject all packages.
no-debsig
# Log status changes and actions to a file.
log /var/log/dpkg.log
testopt
testopt2 test
(end code)
*)
module Dpkg =
autoload xfm
let sep_tab = Util.del_ws_tab
let sep_spc = Util.del_ws_spc
let eol = del /[ \t]*\n/ "\n"
let comment = Util.comment
let empty = Util.empty
let word = /[^,# \n\t]+/
let keyword = /[^,# \n\t\/]+/
(* View: record
Keyword, followed by optional whitespace and value, followed
by EOL.
The actual file specification doesn't require EOL, but the
likelyhood of the file not having one is pretty slim, and
this way things we add have EOL.
*)
let record = [ key keyword . (sep_spc . store word)? . eol ]
(* View: lns
Any number of empty lines, comments, and records.
*)
let lns = ( empty | comment | record ) *
let xfm = transform lns (incl "/etc/dpkg/dpkg.cfg")
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