<s>
Qshell	B-Operating_System
is	O
an	O
optional	O
command-line	O
interpreter	O
(	O
shell	B-Operating_System
)	O
for	O
the	O
IBM	B-Application
i	I-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
Qshell	B-Operating_System
is	O
based	O
on	O
POSIX	O
and	O
X/Open	O
standards	O
.	O
</s>
<s>
It	O
is	O
a	O
Bourne-like	B-Device
shell	I-Device
that	O
also	O
includes	O
features	O
of	O
KornShell	B-Language
.	O
</s>
<s>
The	O
utilities	O
(	O
or	O
commands	B-Application
)	O
are	O
external	O
programs	O
that	O
provide	O
additional	O
functions	O
.	O
</s>
<s>
The	O
development	O
team	O
of	O
Qshell	B-Operating_System
had	O
to	O
deal	O
with	O
platform-specific	O
issues	O
such	O
as	O
translating	O
between	O
ASCII	B-Protocol
and	O
EBCDIC	B-Language
.	O
</s>
<s>
The	O
shell	B-Operating_System
supports	O
interactive	B-Application
mode	I-Application
as	O
well	O
as	O
batch	B-General_Concept
processing	I-General_Concept
and	O
can	O
run	O
shell	B-Language
scripts	I-Language
from	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
with	O
few	O
or	O
no	O
modifications	O
.	O
</s>
<s>
The	O
following	O
is	O
a	O
list	O
of	O
commands	B-Application
that	O
are	O
supported	O
by	O
the	O
Qshell	B-Operating_System
command-line	O
interpreter	O
on	O
IBM	B-Application
i	I-Application
7.4	O
.	O
</s>
<s>
Qshell	B-Operating_System
does	O
not	O
support	O
the	O
redirection	B-Device
operator	I-Device
or	O
provide	O
a	O
command	B-Application
history	I-Application
.	O
</s>
<s>
It	O
also	O
has	O
no	O
job	B-Operating_System
control	I-Operating_System
support	O
as	O
IBM	B-Application
i	I-Application
operating	I-Application
system	I-Application
does	O
not	O
have	O
the	O
concept	O
of	O
a	O
foreground	B-Operating_System
or	O
background	B-Operating_System
process	I-Operating_System
group	O
.	O
</s>
<s>
The	O
POSIX	O
standard	O
and	O
built-in	O
commands	B-Application
are	O
therefore	O
not	O
available	O
as	O
well	O
.	O
</s>
<s>
According	O
to	O
IBM	O
,	O
QSHELL	B-Operating_System
is	O
a	O
“	O
Unix-like	B-Operating_System
”	O
interface	O
built	O
over	O
IBM	B-Application
i	I-Application
.	O
</s>
<s>
The	O
commands	B-Application
issued	O
by	O
the	O
user	O
point	O
to	O
programs	O
in	O
a	O
“	O
Qshell	B-Operating_System
”	O
library	O
.	O
</s>
<s>
It	O
began	O
as	O
a	O
port	O
from	O
the	O
ash	B-Operating_System
shell	I-Operating_System
,	O
which	O
was	O
a	O
Bourne-like	B-Device
shell	I-Device
created	O
by	O
Berkeley	O
Software	O
Design	O
.	O
</s>
