Operating System Tutorial
Index
U
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
u key in mail
UID (user identification)
umask(C)
undeleting mail messages
uppercase letters
user, more information about
/usr/adm/messages
/usr/bin
/usr/spool/lp/requests
/usr/spool/mail
UUCP (UNIX-to-UNIX Communications Protocol)