Essential System Administration, Third Edition
| [SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z] U.C. Davis u(ser) access 2nd UCE [See spam, suppressing] ucomm.sh command UDP (User Datagram Protocol) UFS filesystem ufsdump command (Solaris) UID 2nd 0 assigning effective 2nd real retired accounts ulimit command umask umask command umount command 2nd unintended side effects 2nd uninterruptable power supply (UPS) Universal Serial Bus [See USB devices] University of Delaware University of Maryland University of Michigan University of Washington 2nd Unix domain sockets Unix filesystem layout UNIX Hater's Handbook unsolicited commercial email [See spam] unusual capitalization upacct command upacct package 2nd UPS (uninterruptable power supply) USB cables connectors USB devices special files for support for usbdevs command (FreeBSD) 2nd usbmodules command (Linux) usbutils package (Linux) usbview package (Linux) use_cw_file sendmail feature USENIX user accounts adding 2nd attributes 2nd automatic inactivation captive classes (FreeBSD) controls 2nd 3rd converting to OpenLDAP default attributes definition disabling dynamic group membership expiration dates GECOS field group memberships groups and home directories 2nd 3rd 4th initialization files 2nd locking login shells 2nd 3rd 4th maximum groups modifying nobody password file passwords 2nd 3rd primary group projects (Solaris) removing 2nd 3rd resource limits 2nd retiring root security issues standard system testing tools for managing user-private groups 2nd user agents, mail 2nd IMAP and POP and user authentication [See authentication] User Datagram Protocol (UDP) user ID [See UID] user-private groups 2nd useradd command 2nd userdel command usermod command 2nd 3rd 4th 5th usernames 2nd users backups and communicating with 2nd educating 2nd electronic mail issues interacting with security awareness 2nd special requests when they leave /usr/bin directory /usr directory /usr/include directory /usr/lib directory /usr/lib/passwd/passwd.conf configuration file /usr/lib/security/mkuser.default configuration file (AIX) /usr/lib/sendmail.d/bin directory /usr/lib/X11/fonts directory /usr/local directory /usr/local/share/snmp/snmpd.conf configuration file 2nd /usr/lpp directory (AIX) /usr/ports directory (FreeBSD) 2nd /usr/sbin directory /usr/share directory /usr/share/man/man.cf configuration file (Solaris) /usr/share/skel directory (FreeBSD) /usr/skel directory (Tru64) /usr/src directory /usr/ucb directory UTC (Coordinated Universal Time) utmp accounting file UUCP 2nd |