FINAL TRIM SIZE : 7.5 in x 9.0 in
Glossary
session
The
time
b
et
w
een
logging
in
and
logging
out.
shell
An
HP-UX
command
in
terpreter
(Bourne,
Korn,
Key
,P
osix or
C),
pro
viding a
working
environmen
t
in
terface
for
the
user.
The
shell
tak
es
command
input
from
the
k
eyb
oard
and
in
terprets
it
for
the
op
erating
system.
shell
script
A
le
that
con
tains
commands
that
a shell
can
in
terpret
and
run.
Also
\shell
program."
shut
down
T
o
tak
e
the
system
from
m
ulti-user
state to
a state
in whic
h
no
pro
cesses
are
running,
using
the
shutdown
command.
single-user
state
The
state
of
a
computer
where
there
is
little
or
no
pro
cess activit
y
and
no
users
logged
in.
The
system
is
only
accessible
to
the
curren
t
system
administrator
(ro ot).
This
mo
de
is
brough
t
ab
out
b
y
execution
of
shutdown
(1).
Also
called
single-user
mo
de
.
SPU
System
Pro
cessing
Unit.
The
instruction-pro
cessing
mo
dule
of
the
computer.
standalone
A
computer
whic
h
is
not
part
of
a cluster.
standard
error
The
destination
of
error
and
sp
ecial
messages
from
a
program,
intended
to b e used for diagnostic messages. The standard error output is often
called
stderr
,
and is automatically op ened b
y the shell for writing on le
descriptor 2 for ev
ery command in
voked. Standard error usually appears on
the displa
y unless it is directed
otherwise.
standard input
The source
of input data for a program. The standard input le is often
Glossary-13
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