systemd-delta — Find overridden configuration files
systemd-delta [OPTIONS...] [
systemd-delta may be used to
identify and compare configuration files that override
other configuration files. Files in
/etc have highest priority, files
/run have the second highest
priority, ..., files in
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 "
directories which contain "drop-in" files with
configuration snippets which augment the main
configuration file. "Drop-in" files can be overriden
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
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 (
/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
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
The following options are understood:
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:
Show masked files
Show overridden files that while overridden, do not differ in content.
Show files that are redirected to another.
Show overridden, and changed files.
Show *.conf files in drop-in directories for units.
Show unmodified files too.
When showing modified
files, when a file is overridden show a
diff as well. This option takes a
boolean argument. If omitted, it defaults
Do not pipe output into a pager.
To see all local configuration:
To see all runtime configuration:
To see all system unit configuration changes:
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.