uusched(1M)                                                        uusched(1M)


NAME
     uusched, pollhost, uudemon.hour, uudemon.poll - the scheduler for the
     uucp file transport program

SYNOPSIS
     /etc/uucp/uusched [-x sched_level] [-u cico_level]
     /etc/uucp/pollhost [-p] sys_name1 [sys_name2 ...]
     /etc/uucp/uudemon.hour
     /etc/uucp/uudemon.poll

DESCRIPTION
     uusched is the uucp file transport scheduler.  It is usually started by
     the uudemon.hour script that is started by cron(1M) from an entry in
     /var/spool/cron/crontabs/uucp such as:

          39 * * * * /etc/uucp/uudemon.hour

     The two options are for debugging purposes only:

     -x sched_level   Output debugging messages from uusched.

     -u cico_level    Passed as -x cico_level to uucico.

     The sched_level or cico_level is a number between 0 and 9.  Larger
     numbers give more detailed information.

     Before starting to contact each remote machine, uusched checks to see if
     the file /etc/nologin exists.  If it does, the entire process is stopped.

     uudemon.poll schedules calls to remote systems listed in the file
     /etc/uucp/Poll.  Only those systems with listed hours equal to the
     current time are scheduled.

     pollhost schedules calls to the remote systems listed as its arguments.
     The optional -p causes uusched to be started immediately, instead of
     waiting for it to be started by cron.  These two scripts are commonly
     used to poll remote machines, because the remote machines do not call
     this one, to minimize the delays caused by busy telephones, or simply to
     test the connection.  One of them is often executed by cron(1M) from an
     entry in /var/spool/cron/crontabs/uucp.  For example, the following entry
     polls all known neighbors twice a month:

          0 0 1,5 * * /etc/uucp/pollhost `uuname`


FILES
     /etc/nologin
     /etc/uucp/Systems
     /etc/uucp/Permissions
     /etc/uucp/Devices
     /etc/uucp/Poll
     /var/spool/uucp/*


     /var/spool/locks/LCK*
     /var/spool/uucppublic/*
     /var/spool/cron/crontabs/uucp

SEE ALSO
     cron(1M), uucico(1M), uucp(1C), uuname(1C), uustat(1C), uux(1C).


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