4.3BSD-UWisc/man/cat8/uucico.8c
UUCICO(8C) UNIX Programmer's Manual UUCICO(8C)
NAME
uucico, uucpd - transfer files queued by uucp or uux
SYNOPSIS
/usr/lib/uucp/uucico [ -d_s_p_o_o_l_d_i_r ] [ -g_g_r_a_d_e ] [ -r_r_o_l_e ] [
-R ] [ -s_s_y_s_t_e_m ] [ -x_d_e_b_u_g ] [ -L ] [ -t_t_u_r_n_a_r_o_u_n_d ]
/etc/uucpd
DESCRIPTION
_U_u_c_i_c_o performs the actual work involved in transferring
files between systems. _U_u_c_p(1C) and _u_u_x(1C) merely queue
requests for data transfer which _u_u_c_i_c_o processes.
The following options are available.
-d_s_p_o_o_l_d_i_r
Use _s_p_o_o_l_d_i_r as the spool directory. The default is
/usr/spool/uucp.
-g_g_r_a_d_e Only send jobs of grade _g_r_a_d_e or higher this
transfer. The grade of a job is specified when the
job is queued by _u_u_c_p or _u_u_x.
-r_r_o_l_e _r_o_l_e is either 1 or 0; it indicates whether _u_u_c_i_c_o
is to start up in master or slave role, respec-
tively. 1 is used when running _u_u_c_i_c_o by hand or
from _c_r_o_n(8). 0 is used when another system calls
the local system. Slave role is the default.
-R Reverse roles. When used with the -r1 option, this
tells the remote system to begin sending its jobs
first, instead of waiting for the local machine to
finish.
-s_s_y_s_t_e_m
Call only system _s_y_s_t_e_m. If -s is not specified,
and -r1 is specified, _u_u_c_i_c_o will attempt to call
all systems for which there is work. If -s is
specified, a call will be made even if there is no
work for that system. This is useful for polling.
-x_d_e_b_u_g Turn on debugging at level _d_e_b_u_g. Level 5 is a good
start when trying to find out why a call failed.
Level 9 is very detailed. Level 99 is absurdly ver-
bose. If _r_o_l_e is 1 (master), output is normally
written to the standard message output _s_t_d_e_r_r. If
_s_t_d_e_r_r is unavailable, output is written to
/usr/spool/uucp/AUDIT/_s_y_s_t_e_m. When _r_o_l_e is 0
(slave), debugging output is always written to the
AUDIT file.
Printed 12/27/86 May 15, 1986 1
UUCICO(8C) UNIX Programmer's Manual UUCICO(8C)
-L Only call ``local'' sites. A site is considered
local if the device-type field in _L._s_y_s is one of
LOCAL, DIR or TCP.
-t_t_u_r_n_a_r_o_u_n_d
Use _t_u_r_n_a_r_o_u_n_d as the line turnaround time (in
minutes) instead of the default 30. If _t_u_r_n_a_r_o_u_n_d
is missing or 0, line turnaround will be disabled.
After _u_u_c_i_c_o has been running in slave role for _t_u_r_-
_n_a_r_o_u_n_d minutes, it will attempt to run in master
role by negotiating with the remote machine. In
earlier versions of _u_u_c_i_c_o, a transfer of many large
files in one direction would hold up mail going in
the other direction. With the turnaround code work-
ing, the message flow will be more bidirectional in
the short term. This option only works with newer
_u_u_c_i_c_o's and is ignored by older ones.
If _u_u_c_i_c_o receives a SIGFPE (see _k_i_l_l(1)), it will toggle
the debugging on or off.
_U_u_c_p_d is the server for supporting uucp connections over
networks. _U_u_c_p_d listens for service requests at the port
indicated in the ``uucp'' service specification; see _s_e_r_-
_v_i_c_e_s(5). The server provides login name and password
authentication before starting up _u_u_c_i_c_o for the rest of the
transaction.
_U_u_c_i_c_o is commonly used either of two ways: as a daemon run
periodically by _c_r_o_n(8) to call out to remote systems, and
as a ``shell'' for remote systems who call in. For calling
out periodically, a typical line in _c_r_o_n_t_a_b would be:
0 * * * * /usr/lib/uucp/uucico -r1
This will run _u_u_c_i_c_o every hour in master role. For each
system that has transfer requests queued, _u_u_c_i_c_o calls the
system, logs in, and executes the transfers. The file
_L._s_y_s(5) is consulted for information about how to log in,
while _L-_d_e_v_i_c_e_s(5) specifies available lines and modems for
calling.
For remote systems to dial in, an entry in the _p_a_s_s_w_d(5)
file must be created, with a login ``shell'' of _u_u_c_i_c_o. For
example:
nuucp:Password:6:1::/usr/spool/uucppublic:/usr/lib/uucp/uucico
The UID for UUCP remote logins is not critical, so long as
it differs from the UUCP Administrative login. The latter
owns the UUCP files, and assigning this UID to a remote
login would be an extreme security hazard.
Printed 12/27/86 May 15, 1986 2
UUCICO(8C) UNIX Programmer's Manual UUCICO(8C)
FILES
/usr/lib/uucp/ UUCP internal files/utilities
/usr/lib/uucp/L-devices Local device descriptions
/usr/lib/uucp/L-dialcodes Phone numbers and prefixes
/usr/lib/uucp/L.aliases Hostname aliases
/usr/lib/uucp/L.cmds Remote command permissions list
/usr/lib/uucp/L.sys Host connection specifications
/usr/lib/uucp/USERFILE Remote directory tree permissions list
/usr/spool/uucp/ Spool directory
/usr/spool/uucp/AUDIT/* Debugging audit trails
/usr/spool/uucp/C./ Control files directory
/usr/spool/uucp/D./ Incoming data file directory
/usr/spool/uucp/D.hostname/ Outgoing data file directory
/usr/spool/uucp/D.hostnameX/ Outgoing execution file directory
/usr/spool/uucp/CORRUPT/ Place for corrupted C. and D. files
/usr/spool/uucp/ERRLOG UUCP internal error log
/usr/spool/uucp/LOGFILE UUCP system activity log
/usr/spool/uucp/LCK/LCK..* Device lock files
/usr/spool/uucp/SYSLOG File transfer statistics log
/usr/spool/uucp/STST/* System status files
/usr/spool/uucp/TM./ File transfer temp directory
/usr/spool/uucp/X./ Incoming execution file directory
/usr/spool/uucppublic Public access directory
SEE ALSO
uucp(1C), uuq(1C), uux(1C), L-devices(5), L-dialcodes(5),
L.aliases(5), L.cmds(5), L.sys(5), uuclean(8C), uupoll(8C),
uusnap(8C), uuxqt(8C)
D. A. Nowitz and M. E. Lesk, _A _D_i_a_l-_U_p _N_e_t_w_o_r_k _o_f _U_N_I_X _S_y_s_-
_t_e_m_s.
D. A. Nowitz, _U_u_c_p _I_m_p_l_e_m_e_n_t_a_t_i_o_n _D_e_s_c_r_i_p_t_i_o_n.
Printed 12/27/86 May 15, 1986 3