Per-activity firefox profile under kde.

firefox-kde.sh

#!/bin/bash
echo 'qdbus org.kde.kactivitymanagerd /ActivityManager/Activities CurrentActivity'>/usr/bin/echo_current_activity
chmod +x /usr/bin/echo_current_activity

echo "Activity for default profile: "
read default_activity

echo '
#!/bin/bash
'>/usr/bin/firefox-kde

echo "
default_activity='$default_activity'
">>/usr/bin/firefox-kde
echo '
firefox="/usr/lib/firefox/firefox.sh"
activity=`/usr/bin/echo_current_activity`
if [ "$activity" = "$default_activity" ]
then
    echo "Default profile" 
    $firefox -P default $@
else
    echo "$activity profile"
    if [ ! -f "$HOME/.mozilla/tmp/$activity" ];
    then
       mkdir -p $HOME/.mozilla/tmp
       $firefox -CreateProfile $activity  -P $activity

       echo "1">"$HOME/.mozilla/tmp/$activity"
    fi
    $firefox -P $activity $@

fi
'>>/usr/bin/firefox-kde
chmod +x /usr/bin/firefox-kde