U

u command, vi text editor, 186

ufs file system, 438

ulimit, /etc/profile, 483

Ultracam Webcams, 348

umount command, 760

umsdos file system, 437

unmounting NFS systems, 760

Upgrade option, installation, 27

URLs (Uniform Resource Locators), 367–368

USB, storage, digital cameras , 361

User Data tab, User Manager, 490

user ID, /etc/user/passwd file, 473

user name

command line completion, 159

login session and, 148

User Manager, 475

user option, Samba, 769

user-defined chain, iptables firewall rules, 592

UserDir directive, httpd.conf, 851

username, Samba, 765

users

account setup, 469

anonymous, NFS sharing and, 749

defaults, 477–483

deleting

User Manager, 492

userdel command, 491–492

desktop, 470

guest account, Samba, 763–765

initial login scripts, 480

MySQL, 926

passwords, 472

resetting, 487

Samba

adding, 777

smb.conf file, 777

sending to all, 499–501

server users, 470

servers, 483–484

shells , system-wide configuration, 482

technical support mailbox, 486–487

.tcshrc file, 481

User Manager, 474–476

useradd command, 470–474

utilities, document format conversion, 272

uucp login, 427