1DBUS-UPDATE-ACTIVA(1)            User Commands           DBUS-UPDATE-ACTIVA(1)
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NAME

6       dbus-update-activation-environment - update environment used for D-Bus
7       session services
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SYNOPSIS

10       dbus-update-activation-environment [--systemd] [--verbose] --all |
11                                          VAR... | VAR=VAL...
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DESCRIPTION

14       dbus-update-activation-environment updates the list of environment
15       variables used by dbus-daemon --session when it activates session
16       services without using systemd.
17
18       With the --systemd option, if an instance of systemd --user is
19       available on D-Bus, it also updates the list of environment variables
20       used by systemd --user when it activates user services, including D-Bus
21       session services for which dbus-daemon has been configured to delegate
22       activation to systemd. This is very similar to the import-environment
23       command provided by systemctl(1)).
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25       Variables that are special to dbus-daemon or systemd may be set, but
26       their values will be overridden when a service is started. For
27       instance, it is not useful to add DBUS_SESSION_BUS_ADDRESS to
28       dbus-daemon's activation environment, although it might still be useful
29       to add it to systemd's activation environment.
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OPTIONS

32       --all
33           Set all environment variables present in the environment used by
34           dbus-update-activation-environment.
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36       --systemd
37           Set environment variables for systemd user services as well as for
38           traditional D-Bus session services.
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40       --verbose
41           Output messages to standard error explaining what
42           dbus-update-activation-environment is doing.
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44       VAR
45           If VAR is present in the environment of
46           dbus-update-activation-environment, set it to the same value for
47           D-Bus services. Its value must be UTF-8 (if not, it is skipped with
48           a warning). If VAR is not present in the environment, this argument
49           is silently ignored.
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51       VAR=VAL
52           Set VAR to VAL, which must be UTF-8.
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EXAMPLES

55       dbus-update-activation-environment is primarily designed to be used in
56       Linux distributions' X11 session startup scripts, in conjunction with
57       the "user bus" design.
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59       To propagate DISPLAY and XAUTHORITY to dbus-daemon and, if present,
60       systemd, and propagate DBUS_SESSION_BUS_ADDRESS to systemd:
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62                   dbus-update-activation-environment --systemd \
63                       DBUS_SESSION_BUS_ADDRESS DISPLAY XAUTHORITY
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65
66       To propagate all environment variables except XDG_SEAT, XDG_SESSION_ID
67       and XDG_VTNR to dbus-daemon (and, if present, systemd) for
68       compatibility with legacy X11 session startup scripts:
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70                   # in a subshell so the variables remain set in the
71                   # parent script
72                   (
73                     unset XDG_SEAT
74                     unset XDG_SESSION_ID
75                     unset XDG_VTNR
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77                     dbus-update-activation-environment --systemd --all
78                   )
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EXIT STATUS

83       dbus-update-activation-environment exits with status 0 on success,
84       EX_USAGE (64) on invalid command-line options, EX_OSERR (71) if unable
85       to connect to the session bus, or EX_UNAVAILABLE (69) if unable to set
86       the environment variables. Other nonzero exit codes might be added in
87       future versions.
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ENVIRONMENT

90       DBUS_SESSION_BUS_ADDRESS, XDG_RUNTIME_DIR and/or DISPLAY are used to
91       find the address of the session bus.
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LIMITATIONS

94       dbus-daemon does not provide a way to unset environment variables after
95       they have been set (although systemd does), so
96       dbus-update-activation-environment does not offer this functionality
97       either.
98
99       POSIX does not specify the encoding of non-ASCII environment variable
100       names or values and allows them to contain any non-zero byte, but
101       neither dbus-daemon nor systemd supports environment variables with
102       non-UTF-8 names or values. Accordingly,
103       dbus-update-activation-environment assumes that any name or value that
104       appears to be valid UTF-8 is intended to be UTF-8, and ignores other
105       names or values with a warning.
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BUGS

108       Please send bug reports to the D-Bus bug tracker or mailing list. See
109       http://www.freedesktop.org/software/dbus/.
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SEE ALSO

112       dbus-daemon(1), systemd(1), the import-environment command of
113       systemctl(1)
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116       Copyright © 2015 Collabora Ltd.
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118       This man page is distributed under the same terms as
119       dbus-update-activation-environment (MIT/X11). There is NO WARRANTY, to
120       the extent permitted by law.
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125D-Bus 1.12.20                     10/01/2021             DBUS-UPDATE-ACTIVA(1)
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