user permissions, /etc/skel directory, 224personal video recorders, 87
pgm command, 79
photos. See graphics
Photoshop, 76 – 77
PHP, 690
configuring for Nginx, 502 – 503phpLDAPadmin tool, 625
physical security, 405
ping command, 350 – 351 , 641
ping6 command, 350 – 351
pipes, 194 – 196
shells, 254PiTiVi, 87
Planner, 65
planning partition strategies, 5
Platform as a Service (PaaS), 561
playing CDs, 75 – 76
Pluggable Authentication Modules (PAM), 232 – 233 , 242
PNG file format, 78
pnm command, 79
poff command, 388
Point-to-Point Protocol over Ethernet (PPPoE), 386 – 388
Point-to-Point Protocol (PPP), 388 – 389
pon command, 388
populating directories, 622 – 623
ports, 356
positional parameters, 260 – 262
POSIX, 145