@unexec if cmp -s %D/etc/sshit.conf %D/etc/sshit.conf-dist; then rm -f %D/etc/sshit.conf; fi
etc/sshit.conf-dist
@exec if [ ! -f %D/etc/sshit.conf ] ; then cp -p %D/%F %B/sshit.conf; fi
sbin/sshit