sort "${_PATH_LIST_UNSORTED}" > "${_PATH_LIST_WHITE}"
echo $(cat "${_PATH_LIST_WHITE}")
-prefixed_msg_no_nl 'collect installed packages outside this selection: '
+prefixed_msg_no_nl 'collect installed packages outside this selection …'
dpkg-query -Wf '${Package}\n' > "${_PATH_LIST_UNSORTED}"
sort "${_PATH_LIST_UNSORTED}" > "${_PATH_LIST_ALL_PACKAGES}"
comm -3 "${_PATH_LIST_ALL_PACKAGES}" "${_PATH_LIST_WHITE}" > "${_PATH_LIST_BLACK}"
-echo $(cat "${_PATH_LIST_BLACK}")
prefixed_msg 'apt-mark auto from diff …'
apt-mark auto `cat "${_PATH_LIST_BLACK}"` > /dev/null