Just copy one of the pre-compiled binary available here on your machine (preferably in a location contained in your PATH) and you are done. If you feel adventurous or you don't like using binaries not compiled by you, you can compile the binary from sources. To do so, you need to install the Go toolchain. Once the go toolchain is installed on your machine, execute go get -u github.com/montag451/citadel-export. The binary will be installed in the bin directory of your GOPATH (use go env GOPATH to find out the value of GOPATH on your machine)

citadel-export is a CLI tool so it must be used from a terminal or a console. Type citadel-export -h to find out the options that the command understands. The required options are:

• email
• room-name or room-id
• output-dir

The option output-dir specifies a directory where the result of the export will be stored. It will contain a file named messages.html that will contain all the messages published in the room and a directory files that will contains all the files uploaded in the room. You can re-use the same output-dir to export a room incrementally.