-for deb in "/root$install_dir"/*; do
- if ! chroot /root dpkg -i "$install_dir/$deb"; then
- chroot /root dpkg -P "${deb%%_*}"
+for deb in "/root${install_dir}"/*
+do
+ [ -f "${deb}" ] || continue
+
+ debbase="${deb##*/}"
+
+ if ! chroot /root dpkg -i "${install_dir}/${debbase}"
+ then
+ chroot /root dpkg -P "${debbase%%_*}"