dpkg-parsechangelog - parse Debian changelog files
reads and parses the changelog of an unpacked Debian
source tree and outputs the information in it to standard output in a
- -l, --file changelog-file
- Specifies the changelog file to read information from. A
‘-’ can be used to specify reading from standard input. The
default is debian/changelog.
- -F changelog-format
- Specifies the format of the changelog. By default the
format is read from a special line near the bottom of the changelog or
failing that defaults to the debian standard format. See also
- -L libdir
- Obsolete option without effect (since dpkg 1.18.8). Setting
the perl environment variables PERL5LIB or PERLLIB has a
similar effect when looking for the parser perl modules.
- -S, --show-field field
- Specifies the name of the field to show (since dpkg
1.17.0). The field name is not printed, only its value.
- -?, --help
- Show the usage message and exit.
- Show the version and exit.
The following options can be used to influence the output of the changelog
parser, e.g. the range of entries or the format of the output.
- --format output-format
- Set the output format. Currently supported values are
dpkg and rfc822. dpkg is the classic output format
(from before this option existed) and the default. It consists of one
paragraph in Debian control format (see deb-control(5)). If more
than one entry is requested, then most fields are taken from the most
recent entry, except otherwise stated:
- Source: pkg-name
- Version: version
- Distribution: target-distribution
- Urgency: urgency
- The highest urgency of all included entries is used,
followed by the concatenated (space-separated) comments from all the
- Maintainer: author
- Date: date
- The date of the entry as a string, as it appears in the
changelog. With a strptime(3) format "%a, %d %b %Y %T
%z", but where the day of the week might not actually correspond
to the real day obtained from the rest of the date string. If you need a
more accurate representation of the date, use the Timestamp field,
but take into account it might not be possible to map it back to the exact
value in this field.
- Timestamp: timestamp
- The date of the entry as a timestamp in seconds since the
epoch (since dpkg 1.18.8).
- Closes: bug-number
- The Closes fields of all included entries are merged.
- Changes: changelog-entries
- The text of all changelog entries is concatenated. To make
this field a valid Debian control format multiline field empty lines are
replaced with a single full stop and all lines is intended by one space
character. The exact content depends on the changelog format.
- The Version, Distribution, Urgency,
Maintainer and Changes fields are mandatory.
- There might be additional user-defined fields present.
- The rfc822 format uses the same fields but outputs a
separate paragraph for each changelog entry so that all metadata for each
entry is preserved.
- Include all changes. Note: other options have no effect
when this is in use.
- -s, --since version
- -v version Include all changes later than
- -u, --until version
- Include all changes earlier than version.
- -f, --from version
- Include all changes equal or later than
- -t, --to version
- Include all changes up to or equal than
- -c, --count number
- -n number Include number entries from
the top (or the tail if number is lower than 0).
- -o, --offset number
- Change the starting point for --count, counted from
the top (or the tail if number is lower than 0).
It is possible to use a different format to the standard one, by providing a
parser for that alternative format.
In order to have dpkg-parsechangelog
run the new parser, a line must be
included within the last 40 lines of the changelog file, matching the Perl
regular expression: “
”. The part in parentheses
should be the name of the format. For example:
@@@ changelog-format: otherformat
Changelog format names are non-empty strings of alphanumerics.
If such a line exists then dpkg-parsechangelog
will look for the parser
as a Dpkg::Changelog::Otherformat
perl module; it is an error
for it not being present. The parser name in the perl module will be
automatically capitalized. The default changelog format is debian
a parser for it is provided by default.
The parser should be derived from the Dpkg::Changelog class and implement the
required documented interface.
If the changelog format which is being parsed always or almost always leaves a
blank line between individual change notes, these blank lines should be
stripped out, so as to make the resulting output compact.
If the changelog format does not contain date or package name information this
information should be omitted from the output. The parser should not attempt
to synthesize it or find it from other sources.
If the changelog does not have the expected format the parser should error out,
rather than trying to muddle through and possibly generating incorrect output.
A changelog parser may not interact with the user at all.
All Parser Options
except for -v
are only supported since dpkg
Short option parsing with non-bundled values available only since dpkg 1.18.0.
- The changelog file, used to obtain version-dependent
information about the source package, such as the urgency and distribution
of an upload, the changes made since a particular release, and the source
version number itself.