chown -R root:admin opt/local/
find opt/local/ \( ! -type d -o \( -type d \( -empty -o ! -perm u+w,a+rx \) \) \) ! -regex '.*/info/dir$' ! -name charset.alias ! -name locale.alias > .installed.lst
touch `cat .installed.lst`
tar --no-recursion --files-from=.installed.lst -cf - | tar -C / --no-recursion -xf -
install-info --info-dir=/opt/local/share/info /opt/local/share/info/octave.info