The practical way to install software on OpenMoko is with the Ipkg package manager, possibly via the graphical Application Manager. Naturally, you need to have obtained an OpenMoko system by other means initially.
For the latest ipk package files from buildhost put the following lines in your /etc/ipkg/base-feed.conf:
src/gz all http://buildhost.openmoko.org/tmp/deploy/ipk/all/ src/gz armv4t http://buildhost.openmoko.org/tmp/deploy/ipk/armv4t/ src/gz fic-gta01 http://buildhost.openmoko.org/tmp/deploy/ipk/fic-gta01/
In the shell, "ipkg update" will update the list of available packages, "ipkg upgrade" will download and install all packages that have a newer version available" and "ipkg install new-app" will download and install "new-app".
Ipkg re-implements for embedded systems the Debian tools dpkg, apt, and apt-get. For example, it uses much less disk space for the package metadata.