Öffnet „Krunner“ beim Betätigen der „Windows-Taste“

add-apt-repository ppa:mehanik/ksuperkey
apt update
apt install ksuperkey

ksuperkey -e 'Super_L=Alt_L|F2'

.config/autostart/ksuperkey.desktop

[Desktop Entry]
Comment[de_DE]=
Comment=
Exec=ksuperkey -e 'Super_L=Alt_L|F2'\s
GenericName[de_DE]=
GenericName=
Icon=bqm-diff
MimeType=
Name[de_DE]=Ksuperkey
Name=Ksuperkey
NoDisplay=false
Path=
StartupNotify=true
Terminal=false
TerminalOptions=
Type=Application
X-DBUS-ServiceName=
X-DBUS-StartupType=
X-KDE-SubstituteUID=false
X-KDE-Username=