uucico(8)uucico(8)NAMEuucico - Transfers uucp command, data, and execute files to remote sys‐
tems
SYNOPSISuucico [-r role_number] [-x debug_level] [-s system_name]
OPTIONS
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.
DESCRIPTION
The uucico daemon transports uucp Command (C.*), Data (D.*), and Exe‐
cute (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 trans‐
fer requests. Selects the device used for the communications connec‐
tion 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.
EXAMPLES
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
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 con‐
trol. Specifies the amount of time (in seconds) for uucico to try to
establish a connection before it times out. A value of 0 (zero) indi‐
cates an unlimited amount of time.
FILES
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
SEE ALSO
Commands: uucp(1), uustat(1), uutry(1), uuto(1), uux(1), cron(8)uucico(8)
