If you want to stitch photographs into panoramas on linux, install the hugin package from your local Linux distribution. hugin is an easy to use cross platform tool for assembling panoramas.
This page used to have a big out-of-date list of panorama related Linux software, the best place to find a more up-to-date list is the Panotools wiki.
Fedora Linux snapshot packages are still available via yum however most Linux distributions now contain the current stable version of hugin.
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Bruno