Henry B. Tindall, Jr. posted a comment on a wiki page

Yes, of course ! For example: (22:06:43) root@pbx:motion# grep mask *.conf camera1.conf:mask_file /usr/local/etc/motion/mask1.pgm camera2.conf:mask_file /usr/local/etc/motion/mask2.pgm camera3.conf:mask_file /usr/local/etc/motion/mask3.pgm camera4.conf:mask_file /usr/local/etc/motion/mask4.pgm camera5.conf:mask_file /usr/local/etc/motion/mask5.pgm (22:06:47) root@pbx:motion# tail -n 6 motion.conf camera /usr/local/etc/motion/camera1.conf camera /usr/local/etc/motion/camera2.conf camera /usr/local/etc/motion/camera3.conf...