First download Tigase XMPP Server and extract it. You can download the official binaries, or the latest and greatest nightly builds.
$ wget http://build.xmpp-test.net/nightlies/dists/2015-01-12/tigase-server-7.0.0-SNAPSHOT-b3752-dist-max.tar.gz $ tar -xf tigase-server-7.0.0-SNAPSHOT-b3752-dist-max.tar.gz $ cd tigase-server-7.0.0-SNAPSHOT-b3752
Please do not run as root.