/usr/share/kservices5/useragentstrings/ is in kio 5.44.0-0ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kservices5/useragentstrings/android10.desktop
/usr/share/kservices5/useragentstrings/chrome10onwinnt51.desktop
/usr/share/kservices5/useragentstrings/chrome22oncurrent.desktop
/usr/share/kservices5/useragentstrings/chrome23oncurrent.desktop
/usr/share/kservices5/useragentstrings/chrome24oncurrent.desktop
/usr/share/kservices5/useragentstrings/chrome50oncurrent.desktop
/usr/share/kservices5/useragentstrings/chrome570oncurrent.desktop
/usr/share/kservices5/useragentstrings/firefox15oncurrent.desktop
/usr/share/kservices5/useragentstrings/firefox16oncurrent.desktop
/usr/share/kservices5/useragentstrings/firefox20oncurrent.desktop
/usr/share/kservices5/useragentstrings/firefox30oncurrent.desktop
/usr/share/kservices5/useragentstrings/firefox36oncurrent.desktop
/usr/share/kservices5/useragentstrings/firefox520oncurrent.desktop
/usr/share/kservices5/useragentstrings/googlebot.desktop
/usr/share/kservices5/useragentstrings/ie401onwinnt4.desktop
/usr/share/kservices5/useragentstrings/ie50onppc.desktop
/usr/share/kservices5/useragentstrings/ie55onwinnt5.desktop
/usr/share/kservices5/useragentstrings/ie60oncurrent.desktop
/usr/share/kservices5/useragentstrings/ie60onwinnt51.desktop
/usr/share/kservices5/useragentstrings/ie70onwinnt51.desktop
/usr/share/kservices5/useragentstrings/ie80onwinnt60.desktop
/usr/share/kservices5/useragentstrings/ie90onwinnt71.desktop
/usr/share/kservices5/useragentstrings/lynxoncurrent.desktop
/usr/share/kservices5/useragentstrings/nn301oncurrent.desktop
/usr/share/kservices5/useragentstrings/nn475oncurrent.desktop
/usr/share/kservices5/useragentstrings/nn475onwin95.desktop
/usr/share/kservices5/useragentstrings/ns71oncurrent.desktop
/usr/share/kservices5/useragentstrings/ns71onwinnt51.desktop
/usr/share/kservices5/useragentstrings/op1162oncurrent.desktop
/usr/share/kservices5/useragentstrings/op1202oncurrent.desktop
/usr/share/kservices5/useragentstrings/op403onwinnt4.desktop
/usr/share/kservices5/useragentstrings/op85oncurrent.desktop
/usr/share/kservices5/useragentstrings/op90oncurrent.desktop
/usr/share/kservices5/useragentstrings/op962oncurrent.desktop
/usr/share/kservices5/useragentstrings/safari20.desktop
/usr/share/kservices5/useragentstrings/safari30oniphone.desktop
/usr/share/kservices5/useragentstrings/safari32.desktop
/usr/share/kservices5/useragentstrings/safari40.desktop
/usr/share/kservices5/useragentstrings/safari517.desktop
/usr/share/kservices5/useragentstrings/safari60.desktop
/usr/share/kservices5/useragentstrings/w3moncurrent.desktop
/usr/share/kservices5/useragentstrings/wgetoncurrent.desktop