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2,596
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✅ Solution
Tags:
scripts
nautilus
login
desktop-background
lock-screen
Link:
🔍 See Original Answer on Ask Ubuntu ⧉ 🔗
URL:
https://askubuntu.com/q/871313
Title:
Nautilus can set desktop wallpaper. How can it set login and lock screen wallpaper?
ID:
/2017/01/13/Nautilus-can-set-desktop-wallpaper.-How-can-it-set-login-and-lock-screen-wallpaper_
Created:
January 13, 2017
Edited: July 8, 2018
Upload:
April 8, 2024
Layout: post
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After using Nautilus to navigate and view an appropriate .png or .jpg file to use as login screen and lock screen wallpaper, Nautilus can set this for you using a script:
Note: In Ubuntu 18.04 only the lock screen wallpaper is changed. A different technique will be required to change the login wallpaper.
To create the script use:
cd ~/.local/share/nautilus/scripts/
gedit set-login-wallpaper
Paste in these lines:
#!/bin/bash
## Set login wallpaper
# strip new line char passed by Nautilus
FILENAME=$(echo $NAUTILUS_SCRIPT_SELECTED_FILE_PATHS | sed -e 's/\r//g')
# Multiple files can't be selected.
LINE_COUNT=$(wc -l <<< "$NAUTILUS_SCRIPT_SELECTED_FILE_PATHS")
LINE_COUNT=$((LINE_COUNT-1))
if [[ $LINE_COUNT > 1 ]] ; then
zenity --error --text "Ony one file can be selected at a time! "
exit 1
fi
# Object type must be "file..." (ie no directories, etc.)
if [ -d "${FILENAME}" ] ; then
zenity --error --text "$FILENAME is a directory!";
exit 1
else
if [ -f "${FILENAME}" ]; then
: # Bash noop
else
zenity --error --text "${FILENAME} is not a file!";
exit 2
fi
fi
# Build working file in /tmp
echo "[com.canonical.unity-greeter]" > /tmp/set-login-wallpaper.tmp
echo "draw-user-backgrounds=false" >> /tmp/set-login-wallpaper.tmp
echo "background='$FILENAME'" >> /tmp/set-login-wallpaper.tmp
# Must run as sudo
if [ "$EUID" -ne 0 ] ; then
# Get sudo password
PASSWORD=$(zenity --password --title="Set Login Wallpaper" --timeout=20)
# copy working file to real file using sudo
echo $PASSWORD | sudo -S cp /tmp/set-login-wallpaper.tmp \
/usr/share/glib-2.0/schemas/10_unity_greeter_background.gschema.override
# compile using sudo
echo $PASSWORD | sudo -S glib-compile-schemas /usr/share/glib-2.0/schemas
else
# Already sudo so simply copy and compile
# copy working file to real file
cp /tmp/set-login-wallpaper.tmp \
/usr/share/glib-2.0/schemas/10_unity_greeter_background.gschema.override
# compile
glib-compile-schemas /usr/share/glib-2.0/schemas
fi
exit 0
Save the file and exit the gedit editor.
Now mark the script as executable using:
chmod +x set-login-wallpaper
Open Nautilus and navigate to your directory with wallpaper images. Find an appropriate image and right-click on it. This drop-down menu appears:
Click on the third option Scripts. Another drop down menu appears with all your scripts:
Select set-login-wallpaper.
When the script runs you will have to enter your sudo password.
Reboot and enjoy your new login wallpaper.