check do you have ucf installed and working apt-cache policy ucf which ucf ls -al /usr/bin/ucf ucf --help
/home/user # apt-cache policy ucf ucf: Installed: 1.17-1osso Candidate: 1.17-1osso Version table: *** 1.17-1osso 0 500 https://downloads.maemo.nokia.com ./ Packages 500 https://downloads.maemo.nokia.com ./ Packages 100 /var/lib/dpkg/status /home/user # which ucf /usr/bin/ucf /home/user # ls -al /usr/bin/ucf -rwxr-xr-x 1 root root 30099 Mar 18 2005 /usr/bin/ucf /home/user # /usr/bin/ucf --help /bin/sh: /usr/bin/ucf: not found /home/user #