The simple way is to execute:
$ pkexec --user webbrowser env DISPLAY=$DISPLAY XAUTHORITY=$XAUTHORITY
abrowser
I was about to write that you can make a launcher with that command line as
"Command", e.g., using the "New Item" button of "Main Menu", in MATE's
"Control Center". But that does not work.
The complicated way works:
Create a file /usr/share/polkit-1/actions/org.trisquel.abrowser.policy (here
using Pluma):
$ sudo pluma /usr/share/polkit-1/actions/org.trisquel.abrowser.policy
Copy/paste that (I modified the example in 'man pkexec'):
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE policyconfig PUBLIC
"-//freedesktop//DTD PolicyKit Policy Configuration 1.0//EN"
"http://www.freedesktop.org/standards/PolicyKit/1/policyconfig.dtd";>
<policyconfig>
<action id="org.trisquel.abrowser">
<description>Browse the World Wide Web</description>
<message>Authentication is required to run Abrowser (user=$(user),
program=$(program), command_line=$(command_line))</message>
<defaults>
<allow_any>no</allow_any>
<allow_inactive>no</allow_inactive>
<allow_active>auth_self_keep</allow_active>
</defaults>
<annotate
key="org.freedesktop.policykit.exec.path">/usr/bin/abrowser</annotate>
<annotate key="org.freedesktop.policykit.exec.allow_gui">TRUE</annotate>
</action>
</policyconfig>
Save;
Create a launcher (for instance as explained above) with the Command:
pkexec --user webbrowser abrowser
Please confirm whether that works.
