/usr/bin/calibre-complete
/usr/bin/calibre-customize
/usr/bin/calibredb
/usr/bin/calibre
/usr/bin/calibre-debug
/usr/bin/calibre-parallel
/usr/bin/calibre-server
/usr/bin/calibre-smtp
/usr/bin/ebook-convert
/usr/bin/ebook-device
/usr/bin/ebook-edit
/usr/bin/ebook-meta
/usr/bin/ebook-polish
/usr/bin/ebook-viewer
/usr/bin/fetch-ebook-metadata
/usr/bin/lrf2lrs
/usr/bin/lrfviewer
/usr/bin/lrs2lrf
/usr/bin/markdown-calibre
/usr/bin/web2disk
You may install this package on Debian with
apt-get
install calibre