### locks methods that root can log into the system 
### contents of /etc/securetty file
# console
# vc/1
# vc/2
# vc/3
# vc/4
# vc/5
# vc/6
# vc/7
# vc/8
# vc/9
# vc/10
# vc/11
 tty1
# tty2
# tty3
# tty4
# tty5
# tty6
# tty7
# tty8
# tty9
# tty10
# tty11
# hvc0
# hvc1
# hvsi0
# hvsi1
# hvsi2
# xvc0

