P

passwd command, assigning user password, How to Add a User

passwd file, Where User Account and Group Information Is Stored

fields in, Fields in the passwd File

user ID number assignment and, User ID Numbers

passwords, assigning to users, How to Add a User

passwords (user)

aging, Where User Account and Group Information Is Stored

changing

frequency of, User Passwords

by user, User Passwords

choosing, User Passwords

encryption, Where User Account and Group Information Is Stored

precautions, User Passwords

PATH environment variable

description

Bash and ksh93 Shell Environment Variables

PATH Environment Variable

permissions, Default File Permissions (umask)

primary groups

UNIX Groups

UNIX Groups

.profile file, customizing, Customizing a User Initialization File

PS1 environment variable, Bash and ksh93 Shell Environment Variables

pseudo-ttys, User ID Numbers

pseudo user logins, User ID Numbers