The Linux builds are plain tar archives of the application bundle — nothing installs system-wide, and removing the folder removes the app. x86-64 only for now.

Install

Substitute the filename you actually downloaded; the version in it moves with each release.

tar -xzf fistbump-0.1.9-linux-x64.tar.gz
cd fistbump-0.1.9-linux-x64
./fiducia_fistbump

Whisper is the same with whisper in the names. Move the folder wherever you keep applications — ~/Apps, /opt, anywhere.

Verify your download first

Compare the SHA-256 against the value on the download page before the first run. For an authenticator and a password manager this is not ceremony: a tampered build of either is the worst outcome there is.

sha256sum fistbump-0.1.9-linux-x64.tar.gz

What the vault needs

The vault's device key lives in your desktop's keyring through libsecret, which is present on any GNOME or KDE desktop. On a minimal window-manager setup, install gnome-keyring — or another Secret Service provider — or the vault cannot stay unlocked between launches.

GTK 3 is the only other requirement, and every mainstream distribution ships it.

No sandboxed formats yet

Flatpak and AppImage packaging are planned; the tarball is deliberately the first Linux shape because it adds no packaging layer between you and the signed checksum above.