gks
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This page is an early version, and the intention is to improve it soon.
Solutions
1. There is a workaround to allow graphical application programs owned by other users than the logged in user in Wayland,
xhost +si:localuser:root
2. 'gksu' and 'gksudo' are not bundled with standard Ubuntu. You can install the program package containing them with
sudo apt install gksu
or you can use
sudo -H
3. It is a good idea to prevent graphical application programs owned by other users than the logged in user afterwards,
xhost -si:localuser:root
Links to AskUbuntu
Why don't gksu/gksudo or launching a graphical application with sudo work with Wayland? - Question
Icon file for the desktop file 'gks.desktop' and the shellscript 'gks'
You can download this file, gks.svg. When you arrive at the attachment page, right click on the download link and select save link as ....
The md5sum is
$ md5sum gks.svg 7c955ff11d73a996445be99306b83fac gks.svg
The three files 'gks', 'gks.desktop' and 'gks.svg'
You can also download this file, gks-files.tar.gz, with the 3 files that are used for this purpose,
shellscript gks
desktop file gks.desktop
icon file gks.svg
The md5sum is
$ md5sum gks-files.tar.gz 299e10e42a843ec197ca223179ef1f50 gks-files.tar.gz
and the files are
$ tar -tvf gks-files.tar.gz -rwxr-xr-x sudodus/sudodus 522 2017-10-31 18:45 gks -rwxr-xr-x sudodus/sudodus 384 2017-10-31 18:44 gks.desktop -rw-rw-r-- sudodus/sudodus 5633 2017-10-31 18:09 gks.svg
You can extract the files with
tar -xvf gks-files.tar.gz
Copy the [extracted or copied & pasted] files to the following locations,
sudo cp gks /usr/bin sudo cp gks.desktop /usr/share/applications/ sudo cp gks.svg /usr/share/icons
Logout/login or reboot, and there should be a working desktop icon, that works via the Gnome Shell menu. It will work directly with the shellscript gks from Alt-F2 and from a terminal window too,
gks gedit myfile.txt