SYSTEMD-STDIO-BRIDGE(1) systemd-stdio-bridge SYSTEMD-STDIO-BRIDGE(1)

.SH "NAME" systemd-stdio-bridge - D-Bus proxy

.SH "SYNOPSIS"

.HP 504u

**systemd-stdio-bridge**  
\[OPTIONS...]

.SH "DESCRIPTION"

.PP **systemd-stdio-bridge** implements a proxy between STDIN/STDOUT and a D-Bus bus. It expects to receive an open connection via STDIN/STDOUT when started, and will create a new connection to the specified bus. It will then forward messages between the two connections. This program is suitable for socket activation: the first connection may be a pipe or a socket and must be passed as either standard input, or as an open file descriptor according to the protocol described in [**sd\_listen\_fds**(3)](/man/os/systemd/sd_listen_fds.3). The second connection will be made by default to the local system bus, but this can be influenced by the **--user**, **--system**, **--machine=**, and **--bus-path=** options described below.

.PP [**sd-bus**(3)](/man/os/systemd/sd-bus.3) uses **systemd-stdio-bridge** to forward D-Bus connections over [**ssh**(1)](/man/os/systemd/ssh.1), or to connect to the bus of a different user, see [**sd\_bus\_set\_address**(3)](/man/os/systemd/sd_bus_set_address.3).

.SH "OPTIONS"

.PP The following options are understood:

.PP **--user**

Talk to the service manager of the calling user, rather than the service manager of the system.

.RE  
.PP **--system**

Talk to the service manager of the system. This is the implied default.

.RE  
.PP **-M**, **--machine=**

Execute operation on a local container. Specify a container name to connect to, optionally prefixed by a user name to connect as and a separating @ character. If the special string .host is used in place of the container name, a connection to the local system is made (which is useful to connect to a specific user's user bus: --user --machine=lennart@.host). If the @ syntax is not used, the connection is made as root user. If the @ syntax is used either the left hand side or the right hand side may be omitted (but not both) in which case the local user name and .host are implied.

.RE

.PP **-p PATH**, **--bus-path=PATH**

Path to the bus address. Default: unix:path=/run/dbus/system\_bus\_socket

Added in version 251.

.RE

.PP **-q**, **--quiet**

Suppresses error logging on failure.

Added in version 259.

.RE

.PP **-h**, **--help**

Print a short help text and exit.

.RE  
.PP **--version**

Print a short version string and exit.

.RE

.SH "EXIT STATUS"

.PP On success, 0 is returned, a non-zero failure code otherwise.

.SH "SEE ALSO"

.PP [**dbus-daemon**(1)](/man/os/systemd/dbus-daemon.1), [**dbus-broker**(1)](/man/os/systemd/dbus-broker.1), **D-Bus**\[1], [**systemd**(1)](/man/os/systemd/systemd.1)

# [NOTES](#NOTES)

1\.

D-Bus

https://www.freedesktop.org/wiki/Software/dbus

systemd 262.2

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Document: systemd-stdio-bridge(1) from systemd 262.2-r1 (Chainguard OS)
Source: https://github.com/systemd/systemd