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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | EXIT STATUS | SEE ALSO | COLOPHON |
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SYSTEMD-DELTA(1) systemd-delta SYSTEMD-DELTA(1)
systemd-delta - Find overridden configuration files
systemd-delta [OPTIONS...] [PREFIX | PREFIX/SUFFIX | SUFFIX...]
systemd-delta may be used to identify and compare configuration
files that override other configuration files. Files in /etc/ have
highest priority, files in /run/ have the second highest priority,
..., files in /usr/lib/ have lowest priority. Files in a directory
with higher priority override files with the same name in
directories of lower priority. In addition, certain configuration
files can have ".d" directories which contain "drop-in" files with
configuration snippets which augment the main configuration file.
"Drop-in" files can be overridden in the same way by placing files
with the same name in a directory of higher priority (except that,
in case of "drop-in" files, both the "drop-in" file name and the
name of the containing directory, which corresponds to the name of
the main configuration file, must match). For a fuller
explanation, see systemd.unit(5).
The command line argument will be split into a prefix and a
suffix. Either is optional. The prefix must be one of the
directories containing configuration files (/etc/, /run/,
/usr/lib/, ...). If it is given, only overriding files contained
in this directory will be shown. Otherwise, all overriding files
will be shown. The suffix must be a name of a subdirectory
containing configuration files like tmpfiles.d, sysctl.d or
systemd/system. If it is given, only configuration files in this
subdirectory (across all configuration paths) will be analyzed.
Otherwise, all configuration files will be analyzed. If the
command line argument is not given at all, all configuration files
will be analyzed. See below for some examples.
The following options are understood:
-t, --type=
When listing the differences, only list those that are asked
for. The list itself is a comma-separated list of desired
difference types.
Recognized types are:
masked
Show masked files
equivalent
Show overridden files that while overridden, do not differ
in content.
redirected
Show files that are redirected to another.
overridden
Show overridden, and changed files.
extended
Show *.conf files in drop-in directories for units.
Added in version 205.
unchanged
Show unmodified files too.
--diff=
When showing modified files, when a file is overridden show a
diff as well. This option takes a boolean argument. If
omitted, it defaults to true.
-h, --help
Print a short help text and exit.
--version
Print a short version string and exit.
--no-pager
Do not pipe output into a pager.
To see all local configuration:
systemd-delta
To see all runtime configuration:
systemd-delta /run
To see all system unit configuration changes:
systemd-delta systemd/system
To see all runtime "drop-in" changes for system units:
systemd-delta --type=extended /run/systemd/system
On success, 0 is returned, a non-zero failure code otherwise.
systemd(1), systemd.unit(5)
This page is part of the systemd (systemd system and service
manager) project. Information about the project can be found at
⟨http://www.freedesktop.org/wiki/Software/systemd⟩. If you have a
bug report for this manual page, see
⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/systemd/systemd.git⟩ on 2025-08-11. (At that
time, the date of the most recent commit that was found in the
repository was 2025-08-11.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
systemd 258~rc2 SYSTEMD-DELTA(1)
Pages that refer to this page: binfmt.d(5), modules-load.d(5), sysctl.d(5), systemd.preset(5), tmpfiles.d(5), systemd.directives(7), systemd.index(7)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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