HP 382 - Page 43

FINAL TRIM SIZE : 7.5 in x 9.0 in
4
W
orking
with
Shells
Whenever
y
ou
en
ter
a
command
y
ou
are
making
use
of
a
command
in
terpreter
whic
h
in
terprets
that
command
for
HP-UX.
The
command
interpreter
is called
a
shell .
When y
ou log
in, y
ou are
said
to
b
e
\in"
a
shell
.
HP-UX
supp
orts
sev
eral
dieren
t
shells
whic
h
b
eha
v
e
in
sligh
tly
dieren
t
w
a
ys and
give
you
varying
amoun
ts
of
in
teractiv
e
supp
ort
at
your
display
. These
are
called
the
Bourne,
Korn, P
osix, Key
, and
C
Shells.
The
en
vironmen
t
y
ou
select
when
y
ou
set
up
y
our
user
accoun
t
determines
whic
h
shell
y
ou
get
when
y
ou
rst
log
in,
and
y
ou
ha
v
e
the
option
of c
hanging shells
later.
Basics
of
Shells:
Characteristics,
Choosing
and
Using
HP-UX
giv
es
y
ou
y
our
c
hoice
of
sev
eral
dieren
t
shell-typ
es whic
h
y
ou
can
run:
the
Bourne,
Korn,
P
osix,
Key
,
and
C
Shells.
Eac
h
of
these
shells
has
dieren
t
c
haracteristics,
and
y
ou
can increase
the
sp
eed
and
eciency
with
whic
h
y
ou
in
teract
with
HP-UX
inside
windo
ws
if
y
ou
learn
to
use some
of
the
built-in
features
of
the
shell
of
y
our
c
hoice.
F
or
details
on
shell
features
and
b
eha
vior, please
see the
Using
HP-UX
and
the
Shel
ls:
User's
Guide
.
Using the Command Line 4-3