In Ancient Greek folklore, a phoenix is a long-lived bird that cyclically regenerates or is otherwise born again. Associated with the sun, a phoenix obtains new life by arising from the ashes of its predecessor. Almost alike this web server can regenerate/update itself into a newer version.

This was done as a learning exercise to get more fluent in golang, therefore it's not recommended to be used in a productive environment :)

go get github.com/sprengr/Phoenix

go build -ldflags "-X main.Version=ver1" 

go build -ldflags "-X main.Version=ver2" -o releases/Phoenix && go build -ldflags "-X main.Version=ver1" && ./Phoenix

go.exe build -ldflags "-X main.Version=ver2" -o releases/Phoenix.exe && go.exe build -ldflags "-X main.Version=ver1" && Phoenix.exe

• Only releases using the same name as the running executable and responding to --version will be applied. This reduces the risk to release a wrong executable.
• Only regular files will be considered updates.
• Install functionality uses Check, e.g. you can only install something if Check was run.
• Caution: Everything that's considered an allowed update will be run! To prevent someone to for example upgrade to a "read the manual really fast" rm -rf / (😁) version it's recommended to only run the service as an unprivilged user.