<s>
is	O
a	O
standard	O
program	O
on	O
Unix	B-Application
and	O
Unix-like	B-Operating_System
operating	I-Operating_System
systems	I-Operating_System
that	O
lists	O
,	O
edits	O
and	O
reexecutes	O
commands	O
previously	O
entered	O
to	O
an	O
interactive	O
shell	O
.	O
</s>
<s>
fc	B-Device
is	O
a	O
builtin	O
command	B-Application
in	O
the	O
Bash	B-Operating_System
and	O
Zsh	O
shells	O
and	O
is	O
an	O
initialism	O
for	O
"	O
fix	O
command	B-Application
"	O
.	O
</s>
<s>
Flag	O
-l	O
used	O
to	O
list	O
previous	O
command	B-Application
history	O
,	O
with	O
example	O
showing	O
command	B-Application
ls	O
as	O
item	O
1001	O
in	O
the	O
user	O
's	O
history	O
.	O
</s>
<s>
Flag	O
-s	O
with	O
this	O
index	O
would	O
then	O
recall	O
the	O
history	O
command	B-Application
from	O
1001	O
:	O
</s>
<s>
Most	O
powerfully	O
,	O
executing	O
fc	B-Device
on	O
its	O
own	O
edits	O
the	O
last	O
command	B-Application
executed	O
.	O
</s>
<s>
Editor	O
can	O
be	O
specified	O
on	O
command	B-Application
line	O
(	O
-e	O
)	O
or	O
via	O
environment	O
variable	O
FCEDIT	O
.	O
</s>
<s>
User	O
is	O
thus	O
able	O
to	O
fully	O
modify	O
the	O
last	O
command	B-Application
executed	O
via	O
the	O
editor	O
,	O
upon	O
exiting	O
will	O
execute	O
the	O
resultant	O
command	B-Application
.	O
</s>
