uucico - Transfers uucp command, data, and execute files
to remote systems
uucico [-r role_number] [-x debug_level] [-s system_name]
Valid values for role_number are: 1 for server mode and 0
(zero) for client mode. The default is 0. If uucico is
started manually, set this option to 1. Displays debugging
information on the screen of the local terminal. The
valid range for debug_level is 0 to 9. The higher the
number, the more detailed the final report. This option
is useful in correcting problems with the expect_send
sequence in the Systems file. The name of the remote system.
Use only when starting uucico manually. The system_name
is supplied internally when uucico is started
automatically.
Note that system names must contain only ASCII
characters.
The uucico daemon transports uucp Command (C.*), Data
(D.*), and Execute (E.*) files that are created by the
uucp and uux commands to a specified remote system. Both
the local and remote systems run the uucico daemon, and
the daemons on the two systems communicate with each
other to complete transfer requests.
The uucico daemon performs the following actions: Scans
the spooling directory (/usr/spool/uucp/system_name) on
the local system for transfer requests. Selects the
device used for the communications connection after checking
the /usr/lib/uucp/Devices file and the lock files in
the /var/spool/locks directory. Places a call to the
specified remote system using information in the Systems,
Dialers, and Dialcodes files located in the /usr/lib/uucp
directory. Performs the required login sequence specified
in the Systems file. Checks permissions listed in the
/usr/lib/uucp/Permissions file. Checks scheduling limits
in the Maxuuscheds and Maxuuxqts files located in the
/usr/lib/uucp directory. Runs all transfer requests from
both the local and the remote system, placing the transferred
files in the public directories (/usr/spool/uucppublic/*).
Logs transfer requests and completions in
files in the /usr/spool/uucp/.Log/uucico directory. Notifies
specified users of transfer requests.
Usually the uucico daemon is called by the uucp and uux
commands when needed, and is started periodically by the
uucp scheduling daemon, uusched, which is started by the
cron daemon.
The uucico daemon can be started from the command line for
debugging. The uucp command uutry also starts uucico with
debugging turned on.
In the case of a uux command request for the execution of
a command on a remote system, the uucico daemon transfers
the files, and the uuxqt daemon executes the command on
the remote system.
To start the uucico daemon from the command line as a
background process and contact the remote system hera,
enter:
/usr/lib/uucp/uucico -r 1 -s hera & To debug uucico
connections, start the uucico daemon with the -x
option, and enter:
/usr/lib/uucp/uucico -r 1 -s venus -x 9
ENVIRONMENT VARIABLES [Toc] [Back] The following environment variables affect the execution
of uucico: Specifies the flow control used on the connection.
Permitted values are: HW (hardware), SW (software),
HSW (hardware and software), and NONE. The uugetty on the
remote system must also use the same flow control. Specifies
the amount of time (in seconds) for uucico to try to
establish a connection before it times out. A value of 0
(zero) indicates an unlimited amount of time.
Specifies the command path Contains all the configuration
files for uucp Contains information about available
devices Contains dial-code abbreviations Specifies initial
handshaking on a link Limits scheduled jobs Limits remote
command executions Describes access permissions for remote
systems Describes accessible remote systems Lists uucico
daemon errors that uucp cannot correct Contains uucico
daemon log files Lists the last time a remote system was
contacted and the minimum time until the next retry Contains
C.*, D.*, and E.* files to be transferred by the
uucico daemon Command files Data files Execute files Contains
files after transfer by the uucico daemon Contains
lock files that prevent multiple uses of devices and multiple
calls to systems
Commands: uucp(1), uustat(1), uutry(1), uuto(1), uux(1),
cron(8)
uucico(8)
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