如何通过远程shell更改Gsettings？

我需要通过Puppet，虚拟终端或ssh自动进行桌面配置。

不幸的是，gsettings通过ssh或虚拟终端调用会产生：

gsettings set org.compiz.core:/org/compiz/profiles/unity/plugins/core/ hsize "4"

(process:29520): dconf-WARNING **: failed to commit changes to dconf: Cannot autolaunch D-Bus without X11 $DISPLAY

当我设置了$DISPLAY与export DISPLAY=:0.0它给另一个错误：

(process:29862): dconf-WARNING **: failed to commit changes to dconf: Could not connect: Connection refused

我能做什么？

关键是设置DBUS_SESSION_BUS_ADDRESS环境变量。

在此线程上，我找到了以下脚本，该脚本有助于获取该变量的正确值。它需要在桌面上运行的进程的名称，我们要在该进程上更改dbus设置。（可以并行运行多个图形会话）。让我们称之为discover_session_bus_address.sh

#!/bin/bash

# Remember to run this script using the command "source ./filename.sh"

# Search these processes for the session variable 
# (they are run as the current user and have the DBUS session variable set)
compatiblePrograms=( nautilus kdeinit kded4 pulseaudio trackerd )

# Attempt to get a program pid
for index in ${compatiblePrograms[@]}; do
    PID=$(pidof -s ${index})
    if [[ "${PID}" != "" ]]; then
        break
    fi
done
if [[ "${PID}" == "" ]]; then
    echo "Could not detect active login session"
    return 1
fi

QUERY_ENVIRON="$(tr '\0' '\n' < /proc/${PID}/environ | grep "DBUS_SESSION_BUS_ADDRESS" | cut -d "=" -f 2-)"
if [[ "${QUERY_ENVIRON}" != "" ]]; then
    export DBUS_SESSION_BUS_ADDRESS="${QUERY_ENVIRON}"
    echo "Connected to session:"
    echo "DBUS_SESSION_BUS_ADDRESS=${DBUS_SESSION_BUS_ADDRESS}"
else
    echo "Could not find dbus session ID in user environment."
    return 1
fi

return 0

使用此脚本，我们可以执行以下操作，假设该unity进程正在桌面上运行，我们要在该桌面上应用设置：

. ./discover_session_bus_address.sh unity
gsettings set org.compiz.core:/org/compiz/profiles/unity/plugins/core/ hsize "4"

一切都会正常进行。

在配置期间尝试通过SSH对无业游民的映像进行gsettings更改时遇到了相同的问题。

这个解决方案/ubuntu//a/326773帮了我大忙，没有任何活动来进行主动连接并试图欺骗环境。YMMV ...

我有一个设置gsetting的POST-Install脚本。因为我以sudo身份运行脚本，所以EUID为0，因此必须首先找到$ RUID（真实用户ID）。

这是我的方法：

#!/usr/bin/env bash
# Get the Real Username
RUID=$(who | awk 'FNR == 1 {print $1}')

# Translate Real Username to Real User ID
RUSER_UID=$(id -u ${RUID})

# Set gsettings for the Real User
sudo -u ${RUID} DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/${RUSER_UID}/bus" gsettings set org.gnome.desktop.interface clock-show-date false

exit