In Ubuntu 17.10 I installed applications from the software center. At first everything worked fine, but after a few days they kind of disappeared. They are neither found when searching in the dash, nor when the executable name directly in the terminal. However, the software center shows them still as installed and they can be launched from there. Any help to fix this strange behavior is appreciated.
It seems the softwares you have mentioned are installed via snap packages. You can check the list of installed snaps by running
You can individually launch an installed snap-software by running
snap run <package-name>
<package-name> by a name found in the output of
To be able to find the software in "Activities" or "Show Applications" you'll have to create a custom
.desktop file. See this Q&A for reference: okular snap package doesn't appear in applications and command 'okular' is not recognized