signaldctl
a cli client for signald
If you installed signald from the debian repo, signaldctl probably got installed too. If not, it can be installed like any other package:
sudo apt install signaldctl
For those not using the debian repository, the latest build of signaldctl can be downloaded for your platform from the CI build:
Or build it yourself:
go get gitlab.com/signald/signald-go/cmd/signaldctl
signaldctl is available in the container images