Q
qemu-kvm package, 551
Qmail, 589
Qpid, 564
QT file format, 86
quality assurance, Ubuntu QA Team, 677 , 678 – 679
query cache in MySQL, 424 – 426
query optimization in MySQL, 426
quota package, 239 – 240
quotacheck command, 240
quotaoff command, 240
quotas. See disk quotas
quotatool package, 239 – 240
qutoaon command, 240 , 241
R
rabbit-mq, 564
Radiance, 80
RAID arrays, 328
RAW file format, 74
Raymond, Eric, 159 – 160
rcp command, 394
RDBMSs (relational database management systems). See relational databases
read buffer usage in MySQL, 426
reboot command, 157
rebooting, 157
receiving email