/usr/ucb/telnet でなく、telnetx を使っていると、
次のようにうまく行かない。
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makoto@tatsumi  21:07:11/971014(~)> telnet tatsumi nntp
Trying 210.145.xx.yy
Connected to fujiwara.chuo.chiba.jp.
Escape character is '^]'.
200 bay-noc-news InterNetNews server INN 1.5.1 17-Dec-1996 ready
help
500 Syntax error or bad command
HELP
500 Syntax error or bad command
quit
500 Syntax error or bad command
^]              ( ここは Control-] <return> としている)

telnet> quit
Connection closed.
makoto@tatsumi  21:07:30/971014(~)> 
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そういう時は、次のようにするとうまく行くはず
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makoto@tatsumi  (~)> /usr/ucb/telnet tatsumi nntp
Trying 210.145.xx.yy
Connected to fujiwara.chuo.chiba.jp.
Escape character is '^]'.
200 bay-noc-news InterNetNews server INN 1.5.1 17-Dec-1996 ready
help
100 Legal commands
        authinfo
        help
        ihave
        check
        takethis
        list
        mode
        quit
        head
        stat
        xbatch
        xpath
        xreplic
For more information, contact "usenet" at this machine.
.
quit
205 .
Connection closed by foreign host.
makoto@tatsumi  21:08:30/971014(~)> 
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