(RaspberryPi2)ubuntu@localhost:~$ rest-cam.shoot 
--- Opening /dev/video0...
Trying source module v4l2...
Error opening device: /dev/video0
open: Permission denied
Trying source module v4l1...
Error opening device: /dev/video0
open: Permission denied
Unable to find a source module that can read /dev/video0.
(RaspberryPi2)ubuntu@localhost:~$ cd /apps/rest-cam.sideload/current/usr/bin/
(RaspberryPi2)ubuntu@localhost:/apps/rest-cam.sideload/current/usr/bin$ sudo ./fswebcam test.jpg
./fswebcam: error while loading shared libraries: libgd.so.3: cannot open shared object file: No such file or directory