.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
.\"
-.\" $OpenBSD: ssh.1,v 1.79 2001/01/28 20:36:16 stevesk Exp $
+.\" $OpenBSD: ssh.1,v 1.80 2001/01/29 12:36:10 djm Exp $
.Dd September 25, 1999
.Dt SSH 1
.Os
.Op Ar command
.Pp
.Nm ssh
-.Op Fl afgknqtvxACNPTX246
+.Op Fl afgknqstvxACNPTX246
.Op Fl c Ar cipher_spec
.Op Fl e Ar escape_char
.Op Fl i Ar identity_file
Quiet mode.
Causes all warning and diagnostic messages to be suppressed.
Only fatal errors are displayed.
+.It Fl s
+May be used to request invocation of a subsystem on the remote system. Subsystems are a feature of the SSH2 protocol which facilitate the use
+of SSH as a secure transport for other application (eg. sftp). The
+subsystem is specified as the remote command.
.It Fl t
Force pseudo-tty allocation.
This can be used to execute arbitrary