ULTRIX Guide to the uucp Utility

This document, "ULTRIX Guide to the uucp Utility" (Order Number: AA-MF03B-TE, June 1990, for ULTRIX Version 4.0 or higher), is a comprehensive guide for system administrators on how to set up, maintain, and troubleshoot the uucp (UNIX to UNIX copy) utility.

Key aspects covered include:

1. Overview of uucp: Explains its function for file transfers and remote command execution, the three program levels (uux/uucp, uucico), the file transfer process, and required hardware (modems, direct connections) and software (configuration files like USERFILE, L.sys, L-devices, L.cmds).
2. Setting Up uucp: Provides instructions for both automatic setup using the uucpsetup command (configuring modems, defining incoming/outgoing connections, refreezing sendmail config) and manual setup (configuring modem lines, passwd file, L.sys, L-dialcodes, L-devices, L.cmds, and spool subdirectories).
3. Maintaining uucp: Details system management tasks such as polling remote sites, compacting spool directories, monitoring network status (uumonitor, uustat), adding/deleting connections and modems, cleaning up excess files, and maintaining system security through file access modes and USERFILE entries (covering login and remote execution permissions, including callback options).
4. Configuring MICOM PAD: A specific section is dedicated to setting up the MICOM Micro800/X.25 Packet Assembler Disassembler (PAD) for use with uucp and tip utilities, including details on connecting the PAD, configuring uucp for dial-out over the PAD using the f-proto protocol, and setting up incoming login service.
5. Troubleshooting: Offers guidance on diagnosing problems by examining LOGFILE, ERRLOG, and SYSLOG entries. It lists and explains common error messages encountered during connection and file transfer stages, as well as administrative errors.