<s>
A	O
command	B-Language
language	I-Language
is	O
a	O
language	O
for	O
job	B-General_Concept
control	I-General_Concept
in	O
computing	O
.	O
</s>
<s>
It	O
is	O
a	O
domain-specific	B-Language
and	O
interpreted	B-Application
language	I-Application
;	O
common	O
examples	O
of	O
a	O
command	B-Language
language	I-Language
are	O
shell	B-Language
or	O
batch	O
programming	O
languages	O
.	O
</s>
<s>
These	O
languages	O
can	O
be	O
used	O
directly	O
at	O
the	O
command	B-Application
line	I-Application
,	O
but	O
can	O
also	O
automate	O
tasks	O
that	O
would	O
normally	O
be	O
performed	O
manually	O
at	O
the	O
command	B-Application
line	I-Application
.	O
</s>
<s>
They	O
share	O
this	O
domain	O
—	O
lightweight	O
automation	O
—	O
with	O
scripting	O
languages	O
,	O
though	O
a	O
command	B-Language
language	I-Language
usually	O
has	O
stronger	O
coupling	B-Application
to	O
the	O
underlying	O
operating	B-General_Concept
system	I-General_Concept
.	O
</s>
<s>
Command	B-Language
languages	I-Language
often	O
have	O
either	O
very	O
simple	O
grammars	O
or	O
syntaxes	O
very	O
close	O
to	O
natural	O
language	O
,	O
to	O
shallow	O
the	O
learning	B-General_Concept
curve	I-General_Concept
,	O
as	O
with	O
many	O
other	O
domain-specific	B-Language
languages	I-Language
.	O
</s>
