<s>
is	O
a	O
command-line	B-Application
interface	I-Application
client	O
program	B-Application
to	O
transfer	O
files	O
using	O
the	O
SSH	B-Protocol
File	I-Protocol
Transfer	I-Protocol
Protocol	I-Protocol
(	O
SFTP	O
)	O
,	O
which	O
runs	O
inside	O
the	O
encrypted	O
Secure	B-Protocol
Shell	I-Protocol
connection	O
.	O
</s>
<s>
It	O
provides	O
an	O
interactive	O
interface	O
similar	O
to	O
that	O
of	O
traditional	O
command-line	B-Application
FTP	B-Protocol
clients	O
.	O
</s>
<s>
One	O
common	O
implementation	O
of	O
is	O
part	O
of	O
the	O
OpenSSH	B-Language
project	O
.	O
</s>
<s>
There	O
are	O
other	O
command-line	B-Application
SFTP	O
clients	O
that	O
use	O
different	O
names	O
,	O
such	O
as	O
lftp	B-Protocol
,	O
PSFTP	B-Operating_System
and	O
PSCP	B-Operating_System
(	O
from	O
PuTTY	B-Operating_System
package	O
)	O
and	O
WinSCP	B-Protocol
.	O
</s>
