overwrite?

[vsreeser]

This is the script I use to download sat pics of earth. Forget where I found it

#!/bin/bash

        wget http://www.opentopia.com/images/data/sunlight/world_sunlight_map_rectangular.jpg -O world.jpg
        temp=$(stat -c%s world.jpg)

I would like the script to overwrite world.jpg each time it runs.

Set it on a 15 min cron

*/15 * * * * /home/virgil/scripts/changer.sh

Not sure why, but it isn't running. Syntax?

Ultimate goal is to use world.jpg as wallpaper and have it auto-update every 15 minutes. Also have to get kde to do that. if I put the file in a dir by itself and use slideshow, it doesn't work..

Is there an easier way to do this? The other apps I have seen work with gnome and other desktops I don't want to use

[elijathegold]

Change your crontab to the following:

SHELL=/bin/bash
*/15 * * * * $HOME/Documents/scripts/changer.sh > /dev/null 2>&1

and your bash scrip to the following (modify the output path as needed)

#!/bin/bash
source $HOME/.bashrc
wget http://www.opentopia.com/images/data/sunlight/world_sunlight_map_rectangular.jpg -O $HOME/Pictures/changer/world.jpg

This sets cron up with the bas shell and your environment.

Still looking in to how to change the wallpaper though.

[Rog131]

There are many ways....

Still looking in to how to change the wallpaper though.

With the (one picture) slideshow wallpaper ?



Plasma4

Older: https://www.kubuntuforums.net/showth...l=1#post361107


Plasma5

Writing:

~/.local/share/plasma/wallpapers/org.web.cam/metadata.desktop

[Desktop Entry]
Encoding=UTF-8
Name=Webcam
Name[x-test]=xxWebcamxxx

Type=Service
ServiceTypes=Plasma/DeclarativeWallpaper
Icon=preferences-desktop-wallpaper
X-Plasma-MainScript=ui/main.qml
X-KDE-PluginInfo-Name=org.web.cam
X-KDE-PluginInfo-EnabledByDefault=true

~/.local/share/plasma/wallpapers/org.web.cam/contents/ui/main.qml

import QtQuick 2.5

Rectangle {
    id: main
    width: 853
    height: 480

    Image {
        id: showImage
        cache : false
        fillMode: Image.PreserveAspectCrop
        anchors.fill: parent
        source: "http://ftp2.innofactor.com/helsinginsatama/image_00001.jpg"
        clip: true
    }

    Timer {
        // milliseconds
        interval: 60000
        repeat: true
        running: true
        onTriggered: { showImage.source =""; showImage.source = "http://ftp2.innofactor.com/helsinginsatama/image_00001.jpg" }
    }
}

Executing the kbuildsycoca5:

kbuildsycoca5 --noincremental

Picking the webcam wallpaper:



Seems to work...




Links

Image QML Type: http://doc.qt.io/qt-5/qml-qtquick-image.html
Timer QML Type: http://doc.qt.io/qt-5/qml-qtqml-timer.html

[elijathegold]

OK, this is a little bit hacky and I'm sure someone will appear with a more "KDEish" solution but:

1. Change the bash script to be the following, changing your paths as needed.

#!/bin/bash
source $HOME/.bashrc

FILE1="$HOME/Pictures/changer/world1.jpg"
FILE2="$HOME/Pictures/changer/world2.jpg"

wget http://www.opentopia.com/images/data/sunlight/world_sunlight_map_rectangular.jpg -O $FILE1
touch $FILE1
cp $FILE1 $FILE2

2. Set the desktop wallpaper to slide show and point it at your folder. Set the timer as you like. Maybe every minute.

3. You may need to initially create the world1.jpg and world2.jpg files. They should both be a copy of your current world.jpg, which can then be removed.

The idea is to have two identical pictures in the slide show which are grabbed from the net every 15 minutes. The slide show just alternates between them.

[elijathegold]

With the (one picture) slideshow wallpaper ?



Plasma4

Older: https://www.kubuntuforums.net/showth...l=1#post361107


Plasma5

Writing:
...
Links

Image QML Type: http://doc.qt.io/qt-5/qml-qtquick-image.html
Timer QML Type: http://doc.qt.io/qt-5/qml-qtqml-timer.html

Presumably, this also removes the need for the cron as it looks like it grabs the image itself? Also, does anything special, such as build tools, need to be installed?

[LinkBot]

Presumably, this also removes the need for the cron as it looks like it grabs the image itself? Also, does anything special, such as build tools, need to be installed?

No cron needed - It is a qml script and it is using the qml timer.

The KDE is using the Qt and the part of the Qt is the qml: https://en.wikipedia.org/wiki/QML .

The qml script is good to verify with the qmlscene: https://doc.qt.io/archives/qt-5.3/qtquick-qmlscene.html . Ubuntu package - qmlscene: http://packages.ubuntu.com/search?ke...ll&section=all .

The 'import QtQuick 2.5' means needs Qt 5.5: https://forum.qt.io/topic/50948/how-...a-qt-version/2 . But it a simple script so it probably works with the Qt5.x -> 'import QtQuick 2.x'.