58 Index
U
uninterruptible power supply. See UPS
UNIX 11, 36
UPS (uninterruptible power supply) 43
users
access control 32
authentication 30
single-user mode 12
V
vim text editor 35
volumes, backing up 41
W
watchdog daemon 25
X
X11 window manager 13, 33
Xserve 44
