They are hard-linked, as seen in this extract from dpkg-deb -c emacs24_24.2-1_armel.deb: Code: hrwxr-xr-x root/root 0 2012-11-16 02:38 ./opt/emacs24/bin/emacs link to ./opt/emacs24/bin/emacs-24.2
hrwxr-xr-x root/root 0 2012-11-16 02:38 ./opt/emacs24/bin/emacs link to ./opt/emacs24/bin/emacs-24.2