P0 space (program region), 241, 242
P1 space (control region), 241, 242
Paged dynamic storage pool, 254–55
Pagefile, 251
Paging
details, 250
entire system, 252–53
example, 249–50
modified page writing, 254
page faults, 250, 252–54
page tables, 249
secondary page caches, 253–54
terminology, 251
within a process, 251–52
PALcode procedures, 15
Parameters (DCL)
entering, 43–44, 45–46
keywords vs., 45–46
overview, 42–43
Passwords
changing, 141–42
expired, changing during login, 142
in login sequence, 36, 37, 38
protection by OpenVMS, 139–41
security issues, 139
system password, 36
for user accounts, 27
Paths (DCL), 76–77
PCSI (POLYCENTER Software Installation Utility), 234
PDP series computers, 1–2
Percent sign (%)
beginning DCL messages, 49
as wildcard character, 71
PERL scripting language, 109–10
Personal Application control (New Desktop), 197
Personal OpenVMS systems, 225–36
console subsystem, 225–33
installing software, 234–35
Internet connections, 235–36
logging in, 228
software licenses, 233–34
system shutdown, 225, 229–33
system startup, 225, 226–29
PHONE facility, 111–13
answering calls, 113
canceling calls, 112
placing calls, 112–13
rejecting calls, 113
starting, 111–12
terminating calls, 113
Physical terminals, 145–48. See also Terminals
PIPE command, 108–9
Pipelining commands, 108–9
Placing PHONE calls, 112–13
POLYCENTER Software Installation Utility (PCSI), 234
POP3, 156–57
Positional qualifiers, 43–44
PRINT command, 78–79
Printing
files, 78–79
using New Desktop Default Printer, 198
Print queues
finding, 81–82
overview, 22, 23
printing files, 78–79
Priorities of processes, 110, 246, 247
Privileged architecture library (PALcode), 15
Privileges
basic, 29
defined, 29
list of, 29–30
overriding file protection, 97
process, adjusting, 110–11
for SYSTEM account, 33
Processes, 239–48
control region (P1 space), 241, 242
defined, 18, 239–41
examining system processes, 20–21, 244
login processes, 39
memory layout, 241–43
moving OpenVMS from 32 to 64 bits, 243
NULL process, 247, 248
paging within, 251–52
priorities, 110, 246, 247
privileges, adjusting, 110–11
program region (P0 space), 241, 242
scheduling, 244–48
spawning subprocesses, 107–8
states, 244–46
system space, 241, 242–43
types of, 18–21
user account limits, 28
Program region (P0 space), 241, 242
Programs
custom commands for, 77
DCL paths and, 76–77
foreign commands for, 76
images, 257–59
installing on personal OpenVMS systems, 234–35
passing embedded data into, 127
passing keyboard data into, 127–28
RUN command for, 75–76
running, 75–77
software licenses, 233–34
See also Applications (New Desktop)
Proxies (DECnet), 180
PURGE command, 74, 144