* EDIT - Segunda tentativa - e pede desculpas imediatamente por todo o trabalho do terminal - espero que seja apenas copiar e colar as entradas destacadas *
a pasta que contém os detalhes dos papéis de parede do gnome é chamada /usr/share/gnome-background-properties/ubuntu-wallpapers.xml
Você pode editar esse arquivo para ter subseções de papel de parede ... / papel de parede apontando para sua nova pasta e arquivos de papel de parede
Abaixo está um script alterado a partir desta entrada do fórum que regenerará o arquivo ubuntu-wallpapers.xml automaticamente para uma pasta que contém arquivos .png e .jpg.
copie e cole o conteúdo em um novo arquivo de texto chamado "ubuntu-wallpaper-generator"
Em seguida, execute o arquivo com a sintaxe
sh ubuntu-wallpaper-generator <path to new wallpaper folder>
Isso irá gerar um arquivo chamado ubuntu-wallpapers.xml na mesma pasta em que você está executando este script.
Faça backup do seu arquivo xml atual com segurança
sudo cp /usr/share/gnome-background-properties/ubuntu-wallpapers.xml /usr/share/gnome-background-properties/ubuntu-wallpapers.xml.backup
a cópia no arquivo recém-gerado
sudo cp ubuntu-wallpapers.xml /usr/share/gnome-background-properties/ubuntu-wallpapers.xml
Aqui está o arquivo de script a que me referi:
#!/bin/bash
#
# This script will take all wallpapers in a given folder and
# make them available as "default" background in the "Change Background" gui
# frontend in Ubuntu.
#
################################################################################
#CONFIG_DIR="/usr/share/gnome-background-properties"
CONFIG_DIR="./"
XML_FILE="$CONFIG_DIR/ubuntu-wallpapers.xml"
if [ $# -ne 1 ]; then
echo "*** syntax ubuntu-wallpaper-generator <path to wallpaper folder> ***"
echo "*** for example ***"
echo "*** ubuntu-wallpaper-generator /usr/share/backgrounds ***"
exit 1
else
WALLPAPER_DIR=$1
echo "*** parameters passed: $1 ***"
fi
#### First check if we have write permissions to the share dirctory. ####
touch $CONFIG_DIR/testfile >/dev/null 2>/dev/null
if [ $? -ne 0 ]; then
echo "**** No permissions to the desktop share directory. ****"
echo "**** $CONFIG_DIR ****"
echo "**** Procedure Terminated. ****"
exit 1
else
rm $CONFIG_DIR/testfile 2>/dev/null
fi
#### Show the script description message. ###
cat <<EOF
################################################################################
This script makes all pictures in the $WALLPAPER_DIR
directory available to all users defined on this system as their
system-wide GNOME wallpapers.
################################################################################
EOF
#### Fail if the wallpaper directory does not exist. ####
if [ ! -d $WALLPAPER_DIR ]; then
echo "**** The wallpaper directory \"$WALLPAPER_DIR\" does not exist. ****"
echo "**** Precedure Terminated. ****"
exit 1
fi
#### Count the number of jpg/jpeg/png images. ####
numfiles=`ls -1 $WALLPAPER_DIR/*.jpg WALLPAPER_DIR/*.jpeg WALLPAPER_DIR/*.png 2>/dev/null | wc -l`
#### If there are no image files there then exit. ####
if [ $numfiles -eq 0 ]; then
echo "**** The wallpaper directory \"$WALLPAPER_DIR\" has no images. ****"
echo "**** Precedure Terminated. ****"
exit 1
fi
#### Now we create the XML file containing the images for backgrounds. ####
#### Start by creating the header in the XML file. ####
cat <<EOF > $XML_FILE
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE wallpapers SYSTEM "gnome-wp-list.dtd">
<wallpapers>
EOF
#### Add each file to the XML file. ####
#### Doing it this way makes sure files with spaces in their names are ####
#### handled properly. (ls .... | while read fname; do) ####
ls -1 $WALLPAPER_DIR/*.jpg $WALLPAPER_DIR/*.png $WALLPAPER_DIR/*.jpeg 2> /dev/null |
while read image_name; do
echo " Adding: `basename "$image_name"`."
fname=`basename "$image_name"`
fname="${fname%%\.*}"
echo " <wallpaper>" >> $XML_FILE
echo " <name>$fname</name>" >> $XML_FILE
echo " <filename>$image_name</filename>" >> $XML_FILE
echo " <options>stretched</options>" >> $XML_FILE
echo " <pcolor>#c58357</pcolor>" >> $XML_FILE
echo " <scolor>#c58357</scolor>" >> $XML_FILE
echo " <shade_type>solid</shade_type>" >> $XML_FILE
echo " </wallpaper>" >> $XML_FILE
done
#### Create the footer for the XML file. ####
echo "</wallpapers>" >> $XML_FILE
cat <<EOF
################################################################################
You're almost done. copy the generated file ubuntu-wallpapers.xml to the
folder /usr/shared/gnome-background-properties
REMEMBER to backup the current ubuntu-wallpaper.xml in that folder first!
################################################################################
EOF
$HOME/.local/share/gnome-background-properties/my-wallpapers.xml
e usar isso, em vez de editar os arquivos de segundo plano do sistema.