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Running the AppImages

AppImage is a portable application format that runs on many Linux distributions without system installation.

AppImages are available for x86_64 and aarch64. They are not available for Raspberry Pi.

Requirements

The AppImages need glibc 2.38 or later, the same as the .deb packages. They also need the FUSE 2 runtime library. See Install FUSE 2.

Step 1 - Install FUSE 2

AppImages mount themselves with FUSE 2. Recent distributions ship FUSE 3 and do not install FUSE 2, so install it first.

On Ubuntu 24.04 and newer, and Debian 13 and newer:

sudo apt install libfuse2t64

On older Debian and Ubuntu releases, the package is named libfuse2.

Run without installing FUSE

To run an AppImage on a system without FUSE 2, unpack it into a temporary directory at each start:

./RimuSDR-*.AppImage --appimage-extract-and-run

Without FUSE 2, and without this option, the AppImage stops with an error about libfuse.so.2 or a failure to mount.

Step 2 - Make the AppImages executable

cd ~/Downloads
chmod +x ./RimuSDR-*.AppImage
chmod +x ./RimuDAX-*.AppImage
chmod +x ./RimuCAT-*.AppImage

Step 3 - Run the applications

Run the AppImages from your Downloads folder:

./RimuSDR-*.AppImage
./RimuDAX-*.AppImage
./RimuCAT-*.AppImage

To start them by name from any directory, move them to ~/.local/bin/:

mkdir -p ~/.local/bin
mv RimuSDR-*.AppImage ~/.local/bin/
mv RimuDAX-*.AppImage ~/.local/bin/
mv RimuCAT-*.AppImage ~/.local/bin/

Log out and back in after you create ~/.local/bin

Debian and Ubuntu add ~/.local/bin to your PATH only if the directory exists when you log in. If you created it with the command above, log out and back in before the applications start by name.

To check that the directory is on your path, run echo $PATH.

After setup

System integration
None. AppImages do not appear in system menus by default.
Launch
Execute the .AppImage file.
Portability
Move the file anywhere, or run it from a USB drive.
Updates
Manual. Download the new version when it is available.

Next, activate your license. See the Activation Guide.