| /etc/uucp | Contains all Basic Network Utilities (BNU) configuration files. | 
| /etc/locks | Contains lock files for system devices. Used by other subsystems in addition to BNU. | 
| /var/spool/uucppublic | Contains files that have been transferred by BNU. | 
| /var/spool/uucp | Contains BNU administrative files. | 
| /var/spool/uucp/.Workspace | Holds temporary files that the file transport programs use internally. | 
| /var/spool/uucp/.Xqtdir | Contains execute files with lists of commands that remote systems can run. | 
| /var/spool/uucp/SystemName | Contains files used by file transport programs. | 
| /etc/uucp/Systems | A list of systems to which uucico can connect. | 
| /etc/uucp/Devices | Defines basic communication parameters for dial-out connections. | 
| /etc/uucp/Permissions | Defines permissions for remote machines contacting the local machine through BNU. | 
| Maxuuscheds | Limits simultaneous scheduled jobs. | 
| Maxuuxqts | Limits simultaneous remote command executions. | 
| /etc/uucp/Dialers | Specifies dialer and modem type. | 
| /etc/uucp/Dialcodes | Contains the initial digits of telephone numbers used to establish remote connections over a phone line. | 
| /usr/sbin/uucp/remote.unknown | A shell script executed when an unknown remote computer attempts to communicate. | 
| /usr/sbin/uucp/Sysfiles | Assigns alternate or additional Systems, Devices, and Dialers files. | 
| /etc/uucp/Poll | Determines when a remote system is called. | 
| uudemon.admin | Sends a BNU status report to a specified login ID. | 
| uudemon.cleanu | Cleans BNU spooling directories at prescheduled times. | 
| uudemon.hour | Initiates file transport calls to remote systems. | 
| uudemon.poll | Polls remote systems listed in the /etc/uucp/Poll file. | 
| /var/spool/uucp/audit | Contains audit information from BNU activities. | 
| /var/spool/uucp/Foreign | Contains error information about BNU activities. | 
| /var/spool/uucp/errors | Contains error information about BNU activities. | 
| /var/spool/uucp/xferstats | Contains statistical information about BNU activities. | 
| /var/spool/uucp/Corrupt | Contains copies of files that cannot be processed by the BNU program. | 
| /var/spool/uucp/.Log | Contains log files from current BNU transactions. | 
| /var/spool/uucp/.Old | Contains log files from old BNU transactions. | 
| /var/spool/uucp/.Status | Stores the last time the uucico daemon tried to contact remote systems. | 
| /var/spool/uucp/SystemName/C.* | These files are the commands allowed when connected to SystemName. | 
| /var/spool/uucp/SystemName/D.* | These files are data files associated with SystemName. | 
| /var/spool/uucp/SystemName/X.* | Executable files on SystemName. | 
| /var/spool/uucp/SystemName/TM.* | Temporary files used when connected to SystemName. | 
| ct | Connects to another system over a telephone line. | 
| cu | Connects to another system. | 
| tip | A variation of cu that requires special configuration. | 
| uucp | Copies files from one system to another running BNU or a version of the UNIX-to-UNIX Copy Program (UUCP). | 
| uudecode | Reconstructs a binary file encoded with uuencode | 
| uuencode | Encodes a binary file into ASCII form for transmission using BNU. | 
| uuname | Provides information about accessible systems. | 
| uupoll | Forces a call to a remote system. | 
| uuq | Displays the BNU job queue. | 
| uusend | Sends a file to a remote host running BNU or UUCP. | 
| uusnap | Displays a brief summary of BNU's status. | 
| uustat | Reports the status of BNU operations. | 
| uuto | Copies files to another system using BNU or UUCP. | 
| uux | Runs a command on a remote system. | 
| uucheck | Checks the /etc/uucp/Permissions file for correct configuration. | 
| uuname | Shows the names of all systems that can be reached through BNU. | 
| uuclean | Cleans BNU spooling directories. | 
| uucleanup | Cleans BNU spooling directories. | 
| uukick | Contacts a remote system with debugging enabled. | 
| uulog | Displays BNU log files. | 
| uutry | Contacts a remote system with debugging enabled; allows override of retry time. | 
| uucpadm | Administers the BNU system. | 
| uupick | Enables users to claim files in the /var/spool/uucppublic directory. | 
| uucp | Login ID with full administrative authority over the BNU subsystem. | 
| Uutry | Contacts a remote system with debugging turned on, and saves the debugging output in a file. |