Transfers Basic Networking Utilities (BNU) command, data, and execute files to remote systems.
The uucico daemon transfers Basic Networking Utilities (BNU) command (C.*), data (D.*), and execute (E.*) files, created by the uucp and uux commands, to a specified remote system. Both the local and remote systems run the uucico daemon, and the two daemons communicate with each other to complete transfer requests.
The uucico daemon performs the following actions:
Usually the uucico daemon is called by the uucp and uux commands when needed and is started periodically by the BNU scheduling daemon, uusched, which is started by the cron daemon.
The uucico daemon can be started from the command line for debugging. The BNU uutry, Uutry, and uukick commands also start the uucico daemon with debugging turned on.
Item | Description |
---|---|
-r RoleNumber | Specifies the server and client relationship. The role numbers are 1 for server mode and 0 for client mode. If the -r flag is not used, the uucico daemon is started in client mode (-r 0), because the uucico daemon is generally started automatically by a BNU command or daemon. When the uucico daemon is started manually, this flag should be set to 1. |
-x DebugLevel | Displays debugging information on the screen of the local terminal. The valid range for the DebugLevel variable is 0 to 9, with a default of 5. Higher numbers cause the information to be more detailed. This flag is useful for diagnosing problems with the expect-send sequence in the /etc/uucp/Systems file. |
-s SystemName | Specifies the name of the remote system. This flag is required
when starting the uucico daemon from the command line. The SystemName variable
is supplied internally when the uucico daemon is started automatically.
Note: System names must contain only ASCII characters. |
To call the uucico daemon from the command line, enter:
/usr/sbin/uucp/uucico -r 1 -s hera &
to start the daemon as a background process and contact remote system hera.
Item | Description |
---|---|
/etc/locks /* | Contains lock files which prevent multiple uses of devices and multiple calls to systems. |
/usr/sbin/uucp/* | Contains the uucico daemon and the configuration files for BNU. |
/etc/uucp/Devices | Contains information about available devices. |
/etc/uucp/Dialcodes | Contains dialing code abbreviations. |
/etc/uucp/Dialers | Specifies initial handshaking on a connection. |
/etc/uucp/Maxuuscheds | Limits scheduled jobs. |
/etc/uucp/Maxuuxqts | Limits remote command executions. |
/etc/uucp/Permissions | Describes access permissions for remote systems. |
/etc/uucp/Systems | Describes accessible remote systems. |
/var/spool/uucp/.Admin/errors | Lists uucico daemon errors that BNU cannot correct. |
/var/spool/uucp/.Log/uucico /* | Contains uucico daemon log files. |
/var/spool/uucp/.Status/SystemName | Lists the last time a remote system was contacted and the minimum time until the next retry. |
/var/spool/uucp/SystemName /* | Contains C.*, D.*, and X.* files to be transferred by the uucico daemon. |
/var/spool/uucp/SystemName/C.* | Contains command files. |
/var/spool/uucp/SystemName/D.* | Contains data files. |
/var/spool/uucp/SystemName/X.* | Contains execute files. |
/var/spool/uucppublic/* | Contain files after transfer by the uucico daemon. |