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packages
        listing with Fink
        searching for by keyword 2nd
        showing details of downloaded
        updating and removing with Fink
packet sniffers 2nd
packet-sniffing attacks 2nd 3rd
pager programs
parent directories
parent processes
partitions. [See hard disks, volumes ]
passwd command
Password Assistant dialog
passwords
        allowing FTP access without
        choosing safe 2nd
        managing
        safer Mac 2nd
        setting MySQL root
        using with sudo command
pasting
        deleted text
        to clipboard from command line
        with vi editor
PATH environment variable
        about
        adding bin directory to
        changing
        relative and absolute paths
paths
        full and relative paths as arguments
        illustrated
        searching absolute
pax command
pbcopy command
pbpaste command
PDFs, converting manual pages to
periodic command
Perl [See also CPAN]
        about 2nd
        building on prerequisite modules
        configuring CPAN
        configuring module's terminal and shell interface
        creating script to reverse input
        defined 2nd
        displaying input backward
        downloading and building Perl modules
        installing DBI and DBD::mysql modules
        installing module from cpan shell prompt
        listing installed modules and updates
        resources for learning
        script using Date::Calc module
        searching for modules
        setting cache size for modules
        using CPAN
        viewing open ports with
permanent shell aliases
permissions. [See also absolute modes, ACL, groups, symbolic modes, user accounts]
        about
        absolute modes 2nd
        ACLs for
        correcting problems with
        defaults for new files
        deleting files and
        examples of
        options for chmod command 2nd
        overriding warnings about
        setting and changing
        troubleshooting
        types of
        umask definitions of
        understanding ownership and
        viewing for current directory files
physical security of computers
pico editor
PID (process ID)
pine command
Ping
pipe character ()
pipeline
piping command output
        to another command
        to e-mail 2nd
Plan 9
plist (Property List) format, about
PocketBackup
POP servers
port numbers
        about
        assigned to services 2nd 3rd
port scanners
ports
        allowing access to specific
        blocking access to
        checking if blocked for TCP traffic
        numbers assigned to services 2nd 3rd
        opening for Apache Web server
        opening for Passive FTP protocol
        viewing open
POST (Power On Self Test)
Postfix
        about
        configuring
PostScript
        printing manual pages with
        printing with 2nd
preemptive multitasking 2nd 3rd
primary groups 2nd
printer drivers
printers
        printer driver support
        printing from non-default
        printing to AppleTalk
        setting default
        viewing information about
printing
        about
        AppleTalk printers for
        from command line 2nd
        lp vs. lpr
        Mac CUPS system for
        man pages
        non-default printers for
        PostScript 2nd 3rd
        single field from file 2nd
private IP addresses
process ID (PID)
processes
        defined 2nd
        monitoring
        seeing updated list of
        viewing own
        viewing system
programming in Unix
prompt macros for tcsh shell
protected memory
ps command
        options for
        viewing processes with
psync utility
puns in Unix
pwd command