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    SubjectRe: rsh problem (update)
    Kamran Karimi wrote:
    > The problem exists in remote executions too.
    > A simple script containing:
    > rsh ls
    > rsh ls
    > rsh ls
    > ceases to work after 10 or 12 invocations. The error message is still
    > "poll: protocol failure in circuit setup"
    > This seems to be happening faster when the rshs are run concurrently by
    > using & to start them.

    This is caused by inetd. The service is being invoked so frequently
    that it's tripping inetd's broken-server-detector. inetd drops a
    message in /var/log/messages:

    Aug 28 23:54:46 bix inetd[319]: shell/tcp server failing (looping),
    service terminated

    and shuts down the service.

    You can restart the service by sending inetd a SIGHUP. You can increase
    inetd's threshold for this service in /etc/inetd.conf:

    shell stream tcp nowait.1000 root /usr/sbin/tcpd in.rshd


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