<s>
GNU	B-Application
parallel	I-Application
is	O
a	O
command-line	B-Application
driven	O
utility	O
for	O
Linux	B-Application
and	O
other	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
which	O
allows	O
the	O
user	O
to	O
execute	O
shell	B-Device
scripts	O
or	O
commands	O
in	B-Operating_System
parallel	I-Operating_System
.	O
</s>
<s>
GNU	B-Application
parallel	I-Application
is	O
free	B-Application
software	I-Application
,	O
written	O
by	O
Ole	O
Tange	O
in	O
Perl	B-Language
.	O
</s>
<s>
Scripts	O
using	O
parallel	O
are	O
often	O
easier	O
to	O
read	O
than	O
scripts	O
using	O
pexec	B-Application
.	O
</s>
<s>
By	O
default	O
,	O
parallel	O
runs	O
as	O
many	O
jobs	O
in	B-Operating_System
parallel	I-Operating_System
as	O
there	O
are	O
CPU	B-Device
cores	I-Device
.	O
</s>
<s>
This	O
searches	O
in	O
all	O
files	O
in	O
the	O
current	O
directory	B-Application
and	O
its	O
subdirectories	B-Application
whose	O
name	O
end	O
in	O
.foo	O
for	O
occurrences	O
of	O
the	O
string	O
bar	O
.	O
</s>
<s>
The	O
above	O
command	O
expands	O
 {  } 	O
with	O
as	O
many	O
arguments	O
as	O
the	O
command	B-Application
line	I-Application
length	O
permits	O
,	O
distributing	O
them	O
evenly	O
among	O
parallel	O
jobs	O
if	O
required	O
.	O
</s>
<s>
However	O
,	O
the	O
former	O
command	O
which	O
uses	O
find/parallel/cp	O
is	O
more	O
resource	O
efficient	O
and	O
will	O
not	O
halt	O
with	O
an	O
error	O
if	O
the	O
expansion	O
of	O
*	O
.ogg	O
is	O
too	O
large	O
for	O
the	O
shell	B-Device
.	O
</s>
