UUDEMON(ADM) UNIX System V
Name
uudemon: uudemon.admin, uudemon.clean, uudemon.hour,
uudemon.poll, uudemon.poll2 - UUCP administrative scripts
Description
UUCP communications and file maintenance can be automated
with the use of the uudemon.hour, uudemon.poll,
uudemon.poll2, uudemon.admin, and uudemon.clean shell
scripts. While in multi-user mode, cron scans files in
/usr/spool/cron/crontabs once each minute for entries to
execute at this time. An example crontabs file, crontab.eg,
is provided to activate these daemons. The system
administrator should copy these from /usr/lib/uucp to
/usr/spool/cron/crontabs/uucp. To do this, log in as user
uucp, edit the crontab.eg file to make any changes, and then
enter the following command:
crontab crontab.eg
This will replace the original crontab entry.
uudemon.admin
The uudemon.admin shell script, as delivered, runs the
uustat command with -p and -q options. The -q reports on
the status of work files (C.), data files (D.), and execute
files (X.) that are queued. The -p prints process
information for networking processes listed in the lock
files (/usr/spool/locks). It sends resulting status
information to the UUCP administrative login (uucp) via
mail.
The default crontab entry for uudemon.admin is:
48 10,14 * * 1 - 5 /bin/su uucp -c \
"/usr/lib/uucp/uudemon.admin" > /dev/null
uudemon.clean
The uudemon.clean shell script, as delivered, takes log
files for individual machines from the /usr/spool/.Log
directory, merges them, and places them in the
/usr/spool/.Old directory with other old log information.
If log files get large, the ulimit may need to be increased.
It also removes work files (C.) 7 days or older, data files
(D.) 7 days old or older, and execute files (X.) 2 days old
or older from the spool files. uudemon.clean mails a
summary of the status information gathered during the
current day to the UUCP administrative login (uucp).
The default crontab entry for uudemon.clean is:
45 23 * * * ulimit 5000; /bin/su uucp -c \
"/usr/lib/uucp/uudemon.clean" > /dev/null
uudemon.hour
The uudemon.hour shell script calls the uusched program to
search the spool directories for work files (C.) that have
not been processed and schedules these files for transfer to
a remote machine. It then calls the uuxqt daemon to search
the spool directories for execute files (X.) that have been
transferred to your computer and were not processed at the
time they were transferred.
This is the default root crontab entry for uudemon.hour :
39, 9 * * * * /usr/lib/uucp/uudemon.hour > /dev/null
This script runs twice per hour (at 39 and 9 minutes past).
uudemon.poll
uudemon.poll uses the Poll (or the alternative Poll.hour and
Poll.day) file (see poll(F)) for polling remote computers.
The uudemon.poll script controls polling but does not
actually perform the poll. It merely sets up a polling file
(C.sysnxxxx) in the /usr/spool/uucp/nodename directory,
where nodename is replaced by the name of the machine. This
file will in turn be acted upon by the scheduler (started by
uudemon.hour). The uudemon.poll script is scheduled to run
twice an hour just before uudemon.hour so that the work
files will be there when uudemon.hour is called. The
default root crontab entry for uudemon.poll is as follows:
1,30 * * * * "/usr/lib/uucp/uudemon.poll > /dev/null"
uudemon.poll2 is an alternative to uudemon.poll, which uses
a different scheme and different poll files. Listing a site
in the Poll file gives you control over the lower bound on
number-of-calls-per-day (at least as many as you specify in
Poll), but still no control on the upper bound. (This is
because uudemon.poll uses the the time field of the Systems
file, which is not suited to the purposes of polling).
uudemon.poll2 permits much more precise control of
scheduling. To use uudemon.poll2, you must remove the call
to uusched from uudemon.hour, and run uudemon.poll2 in place
of uudemon.poll from cron. uudemon.poll2 reads Poll.hour
(or Poll.day if called with the -d option) to determine whom
to poll much like uudemon.poll, but calls uucico directly,
using the -S option, thus overriding the time field of the
Systems file.
Files
/usr/lib/uucp/Systems
/usr/lib/uucp/uudemon.admin
/usr/lib/uucp/uudemon.clean
/usr/lib/uucp/uudemon.hour
/usr/lib/uucp/uudemon.poll
/usr/lib/uucp/uudemon.poll2
/usr/lib/uucp/Poll
/usr/lib/uucp/Poll.hour
/usr/lib/uucp/Poll.day
See Also
uusched(ADM) uucico(ADM), uuclean(ADM), cron(C), uucp(C),
poll(F) systems(F)
Standards Conformance
uudemon is conformant with:
AT&T SVID Issue 2, Select Code 307-127.
uudemon.poll2 is an extension of AT&T System V provided by
the Santa Cruz Operation.
(printed 4/27/90) UUDEMON(ADM)