U

u command in vi, effect of, 234

-U option, using with rpm command, 384–385

UIDs (user IDs)

entering in YaST2, 398

significance of, 396

umask command in BASH shell, example of, 481

umaskirq hard-disk setting, explanation of, 409

umount command in BASH shell example of, 481

removing mounted systems with, 223

unalias command in BASH shell, example of, 481

uname command in BASH shell, example of, 481

underscore (_), using with Rekall databases, 355

Undo operations, performing in BASH shell, 256

Unix, development of, 11

unzip command in BASH shell, example of, 481

update interval, altering in top program, 245

update sites, accessing, 122–124

uptime command in BASH shell, example of, 481

“Usb.3: read info.” error message, troubleshooting, 56

user accounts

creating during installation of SUSE Linux, 49–50

features of, 395–396

limitations of, 212

user authentication method, selecting during installation of SUSE Linux, 48–49

USER column in top program, description of, 244

User Data configuration option in OpenOffice.org, description of, 317

user interface, tweaking with KDE Control Center, 130–134

user permissions, indicating, 213

useradd command in BASH shell, example of, 398, 481

userdel command in BASH shell, example of, 481

usernames, selecting, 67–68

users

access permissions for, 119–120

adding and deleting at command line, 398–399

adding and deleting with YaST2, 396–398

and file permissions, 211–217

placing in groups, 212

switching when working on shell, 216

user’s directory, permissions on, 215–216

Using_dma hard-disk setting, explanation of, 409–410

usr directory in root file system, contents of, 219

UTC time-zone setting, choosing during installation, 42–43