Ubuntu Unleashed 2019 Edition: Covering 18.04, 18.10, 19.04

GRUB2   boot    loader,  345

retrieving database data, 518 – 520

REVOKE statement (SQL), 525 , 529

revoking privileges

in  MySQL,   525

in  PostgreSQL,  529

Rhythmbox, 75 – 76

Riak, 542

ripping CDs, 75 – 76

rm command, 148 – 149 , 179

rmdir command, 148

rmmod command, 435

root directory, changing, 214 – 215

root permissions, granting temporarily, 234

su  command,     234 – 236

sudo    command,     236 – 239

root user account

creating    users,   154 – 155

email   security,    596

explained,   129 ,   218 – 219

fixing  sudo    errors,  152 – 154

removing    users,   155

warnings    about,   151 – 152

root zones, 635

rotating log files, 309 – 312

route command, 389

routers, 365

bridges versus,  407

rsh shell, 250