How Linux Works: What Every Superuser Should Know
U
UDP, 112 “113, 135 “136
UHCI, 213
umask , 24, 26, 271, 307
umount , 44
undefined references, 167
Unix, relationship to Linux, 1 “2
until , 154
unzip , 27
USB, 51, 213, 231 “233, 251
user ID (UID), 68 “69
user input. See Bourne shell, user input
user time, 76
users, manipulating, 69 “70
/usr , 31 “32
/usr/local , 32, 193, 304