/usr/share/kservices5/ghelp.protocol is in kio 5.18.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 | [Protocol]
exec=kf5/kio/ghelp
protocol=ghelp
input=none
output=filesystem
reading=true
defaultMimetype=text/html
Icon=help
Class=:local
|