How can I have latest Dolphin file manager on Ubuntu

Solution 1:

Newer Dolphin may be obtained from KDE FlatPak repository:

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
flatpak remote-add --if-not-exists kdeapps --from https://distribute.kde.org/kdeapps.flatpakrepo
flatpak install kdeapps org.kde.dolphin

The command above will download org.kde.Platform/x86_64/5.11 (about 332 Mb), org.kde.dolphin/x86_64/master and org.kde.dolphin.Locale/x86_64/master. Logout from your account and login back. Then search in dash for Dolphin and launch it:

(you got Dolphin 18.11.70 running on Ubuntu 18.04 LTS).

Theoretically speaking you can get all KDE applications as FlatPak with help of KDE Plasma Discover or with flatpak install kdeapps org.kde. TabTaby.