new problems

Disconnected.
[root@steven steven]# cu -l /dev/ttyS0
Connected.
[Unrecognized.  Use ~~ to send ~]
~.
~~.
~~.


Disconnected.
[root@steven steven]#
[root@steven steven]# ~~.
bash: ~~.: command not found...
[root@steven steven]# ~~.
bash: ~~.: command not found...
[root@steven steven]#
[root@steven steven]# cu -l /dev/ttyS0
Connected.
~?
[Escape sequences]
[~. hangup]                   [~!CMD run shell]
[~$CMD stdout to remote]      [~|CMD stdin from remote]
[~+CMD stdin and stdout to remote]
[~# send break]               [~cDIR change directory]
[~> send file]                [~< receive file]
[~pFROM TO send to Unix]      [~tFROM TO receive from Unix]
[~sVAR VAL set variable]      [~sVAR set boolean]
[~s!VAR unset boolean]        [~v list variables]
[~z suspend]
[~%break send break]         [~%cd DIR change directory]
[~%put FROM TO send file]    [~%take FROM TO receive file]
[~%nostop no XON/XOFF]       [~%stop use XON/XOFF]
~[steven]$ls
~[steven]~~[steven].
~~.

Disconnected.
[root@steven steven]#
[root@steven steven]# ~~.
bash: ~~.: command not found...