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Installation

sslsync is a single program with no dependencies. Pick one way to install it.

curl -fsSL https://ilramdhan.github.io/sslsync/install.sh | sh

The script detects your system, downloads the right file from the latest release, checks its SHA-256 checksum, and copies sslsync to /usr/local/bin (or ~/.local/bin). You can read it first.

Specific version or folder:

curl -fsSL https://ilramdhan.github.io/sslsync/install.sh | SSLSYNC_VERSION=v1.2.0 SSLSYNC_INSTALL_DIR=~/bin sh

brew install --cask ilramdhan/tap/sslsync

Upgrade later with brew upgrade --cask sslsync.

go install github.com/ilramdhan/sslsync/cmd/sslsync@latest

Requires Go 1.26 or newer. The binary goes to $(go env GOPATH)/bin.

Download the .deb, .rpm or .apk from the latest release, then:

sudo dpkg -i sslsync_*_linux_amd64.deb      # Debian / Ubuntu
sudo rpm -i sslsync_*_linux_amd64.rpm       # RHEL / Fedora

docker run --rm ghcr.io/ilramdhan/sslsync:latest version

See Running in Docker below.

Download sslsync_*_windows_amd64.zip from the latest release, unzip it, and put sslsync.exe in a folder on your PATH. WSL works too: use the macOS / Linux installer inside WSL.

Check it works

sslsync version

sslsync v1.2.0

command not found?

The install folder is not on your PATH. The installer prints the line to add to ~/.zshrc or ~/.bashrc. Open a new terminal afterwards.

Verify the download (optional)

Every release's checksums.txt is signed with cosign, without keys, by GitHub Actions:

cosign verify-blob --bundle checksums.txt.sigstore.json \
  --certificate-identity-regexp 'https://github.com/ilramdhan/sslsync/' \
  --certificate-oidc-issuer https://token.actions.githubusercontent.com \
  checksums.txt
sha256sum --ignore-missing -c checksums.txt

Running in Docker

The image is ~15 MB: a single static binary on distroless, running as a non-root user. Mount your folder into /work:

docker run --rm -it --user "$(id -u)" \
  -v "$PWD:/work" \
  -v "$HOME/.ssh/known_hosts:/home/nonroot/.ssh/known_hosts:ro" \
  ghcr.io/ilramdhan/sslsync:latest check

Updating

Run the same install command again, or brew upgrade --cask sslsync. Your .env, certificates and logs are not touched.

Uninstalling

rm "$(command -v sslsync)"      # or: brew uninstall --cask sslsync

Next: Quick start