DBUS-UPDATE-ACTIVA(1) User Commands DBUS-UPDATE-ACTIVA(1)
dbus-update-activation-environment – update environment used for D-Bus
dbus-update-activation-environment [–systemd] [–verbose] –all |
VAR… | VAR=VAL…
dbus-update-activation-environment updates the list of environment
variables used by dbus-daemon –session when it activates session
services without using systemd.
With the –systemd option, if an instance of systemd –user is
available on D-Bus, it also updates the list of environment variables
used by systemd –user when it activates user services, including D-Bus
session services for which dbus-daemon has been configured to delegate
activation to systemd. This is very similar to the import-environment
command provided by systemctl).
Variables that are special to dbus-daemon or systemd may be set, but
their values will be overridden when a service is started. For
instance, it is not useful to add DBUS_SESSION_BUS_ADDRESS to
dbus-daemon’s activation environment, although it might still be useful
to add it to systemd’s activation environment.
Set all environment variables present in the environment used by
Set environment variables for systemd user services as well as for
traditional D-Bus session services.
Output messages to standard error explaining what
dbus-update-activation-environment is doing.
If VAR is present in the environment of
dbus-update-activation-environment, set it to the same value for
D-Bus services. Its value must be UTF-8 (if not, it is skipped with
a warning). If VAR is not present in the environment, this argument
is silently ignored.
Set VAR to VAL, which must be UTF-8.
dbus-update-activation-environment is primarily designed to be used in
Linux distributions’ X11 session startup scripts, in conjunction with
the “user bus” design.
To propagate DISPLAY and XAUTHORITY to dbus-daemon and, if present,
systemd, and propagate DBUS_SESSION_BUS_ADDRESS to systemd:
dbus-update-activation-environment –systemd \
DBUS_SESSION_BUS_ADDRESS DISPLAY XAUTHORITY
To propagate all environment variables except XDG_SEAT, XDG_SESSION_ID
and XDG_VTNR to dbus-daemon (and, if present, systemd) for
compatibility with legacy X11 session startup scripts:
# in a subshell so the variables remain set in the
# parent script
dbus-update-activation-environment –systemd –all
dbus-update-activation-environment exits with status 0 on success,
EX_USAGE (64) on invalid command-line options, EX_OSERR (71) if unable
to connect to the session bus, or EX_UNAVAILABLE (69) if unable to set
the environment variables. Other nonzero exit codes might be added in
DBUS_SESSION_BUS_ADDRESS, XDG_RUNTIME_DIR and/or DISPLAY are used to
find the address of the session bus.
dbus-daemon does not provide a way to unset environment variables after
they have been set (although systemd does), so
dbus-update-activation-environment does not offer this functionality
POSIX does not specify the encoding of non-ASCII environment variable
names or values and allows them to contain any non-zero byte, but
neither dbus-daemon nor systemd supports environment variables with
non-UTF-8 names or values. Accordingly,
dbus-update-activation-environment assumes that any name or value that
appears to be valid UTF-8 is intended to be UTF-8, and ignores other
names or values with a warning.
Please send bug reports to the D-Bus bug tracker or mailing list. See
Copyright © 2015 Collabora Ltd.
This man page is distributed under the same terms as
dbus-update-activation-environment (MIT/X11). There is NO WARRANTY, to
the extent permitted by law.
D-Bus 1.10.6 DBUS-UPDATE-ACTIVA(1)