pam_fprint_enroll - to enroll your fingerprint and save it
pam_fprint_enroll options
-h --help Display this usage information. -f --enroll-finger index Enroll finger with index. Valid indexes are: 1 - Left Thumb 2 - Left Index Finger 3 - Left Middle Finger 4 - Left Ring Finger 5 - Left Little Finger 6 - Right Thumb 7 - Right Index Finger 8 - Right Middle Finger 9 - Right Ring Finger 10 - Right Little Finger