`rsh` に失敗し、"poll: protocol failure in circuit setup" メッセージが表示される理由
Issue
サーバーに rsh すると、以下のエラーが表示されます。
$ rsh 192.168.0.254 -l username -n "pwd"
poll: protocol failure in circuit setup
Environment
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 5
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