Ubuntu Unleashed 2019 Edition: Covering 18.04, 18.10, 19.04

Scratch,     692

Vala,    692

programs, finding, 12

promiscuous mode, 407

proprietary software, open source software versus, 16

proprietary video drivers, installing, 98 – 99

proxy servers

clients,    configuring,     604 – 605

explained,   603

resources   for information,     617

Squid

configuring ACLs,    605 – 609

installing,  604

sample  configurations,  610 – 612

specifying  client  IP  addresses,   609 – 610

VPNs    versus,  612 – 613

ps command, 187 – 188 , 194 – 195 , 301 – 303

PS1 environment variable, 201

psql command, 527 , 534 , 535

public clouds, 562

Publican, 67

PulseAudio, 72 – 73

Puppet, 574

purge-old-kernels command, 666

pwd command, 126 , 139

PWD environment variable, 198

Python, 690 – 691