On Linux, Safeguard Desktop 3.2.2 ships as a single AppImage for 64-bit x86. Download it, mark it executable, and run it. Two requirements trip people up: your system needs FUSE, and the Safeguard CLI must already be installed and on your PATH.
What the page says
The download page lists Safeguard-3.2.2-x86_64.AppImage, about 120 MB, for 64-bit x86 Linux with FUSE required. It also says the Safeguard CLI must be installed and on your PATH. There is no mention of other Linux packaging in that listing, so plan around the AppImage.
Steps
cd ~/Downloads
sha256sum Safeguard-3.2.2-x86_64.AppImage
chmod +x Safeguard-3.2.2-x86_64.AppImage
./Safeguard-3.2.2-x86_64.AppImage
Compare the checksum against the value on the download page before you run the file. The AppImage documentation puts the basic idea simply: download the file, make it executable, and run it. You can do the same through a file manager by opening the file's properties and allowing it to run as a program.
The FUSE requirement
An AppImage normally mounts itself as a small file system when it starts, and that relies on FUSE. If it fails to start with a message about FUSE, install your distribution's FUSE package and try again. The exact package name differs between distributions, so check your distribution's documentation instead of guessing.
The AppImage documentation also describes two ways to look inside an AppImage without running it normally. Running it with --appimage-mount mounts it read-only and prints the mount directory, and --appimage-extract unpacks the contents into a squashfs-root folder. These are useful for inspection. Whether extracting is a supported way to run Safeguard Desktop is not stated on the page, so treat it as a debugging aid only.
Put the CLI on your PATH
Because the desktop app expects the CLI, install that first. The download page offers curl installers for the CLI. After installing, open a new terminal and confirm the command resolves:
command -v safeguard
If nothing prints, the install directory is not on your PATH yet. Add it in your shell profile, then open a new terminal.
Keeping an AppImage tidy
Put the file somewhere stable such as a folder in your home directory, so launchers and shortcuts do not break. The AppImage documentation mentions tools such as appimaged and AppImageLauncher for adding AppImages to your desktop launcher. Whether you use them is a personal choice. Keep the version in the file name so you can see at a glance what you are running.
Where Safeguard fits
The desktop app and the CLI share a machine well: use the app for exploring questions and the CLI for scripts. The free scan at gold.safeguard.sh/scan is a no-login way to test a manifest first.
Quick check
Which Linux architecture is supported?
The download page lists 64-bit x86 with FUSE required.
Why does the desktop app need the CLI on Linux?
The page states the Safeguard CLI must be installed and on your PATH. It does not explain the internals beyond that.
Sources
Last reviewed: 19 October 2026.
