uusched, pollhost, uudemon.hour, uudemon.poll - the scheduler for the
uucp file transport program
/etc/uucp/uusched [-x sched_level] [-u cico_level]
/etc/uucp/pollhost [-p] sys_name1 [sys_name2 ...]
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`
cron(1M), uucico(1M), uucp(1C), uuname(1C), uustat(1C), uux(1C).
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