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Index: P

parallelizing shell scripts : Parallelization
parenthesis
- for grouping condition tests : File Attribute Checking
- for nested subshells
- - File Attribute Checking
  - Nested Subshells
- within arithmetic expressions : Integer Variables and Arithmetic
Pascal
- Basic Shell Developing
- Functions
- Shell Variables
- Syntax of String Operators
- Exit Status and Return
- Return
- for
- case
- while and until
- Command-line Options and Typed Variables
- The C Compiler as Pipeline
PATH
- Command Search Path
- Environment Variables
- Shell Scripts and Functions
- Advanced Examples: pushd and popd
- while and until
- Arithmetic Variables and Assignment
- Type and Attribute Options
- Options to print
- Command-line Processing
- Installing the Korn Shell as the Standard Shell
- Types of Global Customization
- Privileged Mode
- The Bourne Shell
- Workalikes on PC Platforms
- in restricted shell : Restricted Shell
- security problem with
- - Command Search Path
  - System Break-in Scenario
pathnames
- full : Directories
- limitations in restricted shell : Restricted Shell
- relative : The working directory
pattern-matching operators : Pattern-matching Operators
- #
- ##
- - Pattern-matching Operators
  - Arithmetic Variables and Assignment
- %
- %%
- examples : Pattern-matching Operators
- syntax : Pattern-matching Operators
PCs
- Terminal Types
- Related Shells
- Workalikes on PC Platforms
pdksh : (see public domain Korn shell)
PID : Workalikes on PC Platforms
pipelines
- Command-line Processing
- Coroutines
- system calls used in : Coroutines
pipes : Process Handling
- to code blocks : Code blocks
- compared to two-way pipes : Two-way Pipes Versus Standard Pipes
- two-way : (see two-way pipes)
popd
- Advanced Examples: pushd and popd
- String comparisons
- Arithmetic Variables and Assignment
- Types of Global Customization
- bash
- additional arguments : Arithmetic Variables and Assignment
- functionality : Advanced Examples: pushd and popd
positional parameters
- Positional Parameters
- Command-line Options
- Set Options
- The Preamble
- in functions : Positional parameters in functions
- number of (#) : Positional Parameters
- syntax for higher than nine : More on Variable Syntax
POSIX
- 1003.1 : The IEEE 1003.2 POSIX Shell Standard
- 1003.2
- - (see POSIX, shell)
- 1003.2a (UPE) : The IEEE 1003.2 POSIX Shell Standard
- history : The IEEE 1003.2 POSIX Shell Standard
- shell
- - Related Shells
  - The IEEE 1003.2 POSIX Shell Standard
  - Korn shell features in : The IEEE 1003.2 POSIX Shell Standard
pr : Breakpoints
- using awk instead of pr -n : Breakpoints
print
- Quoting
- Shell Variables
- print
- Reading User Input
- Options to read
- Limitations
- The Bourne Shell
- as debugging aid : Basic Debugging Aids
- escape sequences : print escape sequences
- features in next release : The Future of the Korn Shell
- for emulating eval : eval
- options : Options to print
- - -n
  - - Syntax of String Operators
    - Options to print
  - -n (suppress LINEFEED)
  - - File Attribute Checking
    - String Formatting Options
  - -p : Options to print
  - -p (to two-way pipe)
  - - Coroutines with Two-way Pipes
    - Two-way Pipes Versus Standard Pipes
  - -r : Options to print
  - -s : Options to print
  - -u : Options to print
priorities : Background Jobs and Priorities
privileged mode
- Privileged Mode
- The Bourne Shell
- /etc/suid_profile as environment file : Privileged Mode
- turning off : Privileged Mode
process IDs
- Process IDs and Job Numbers
- ps
- Nested Subshells
- The Bourne Shell
- ! variable (process ID of most recent background job) : Process ID Variables and Temporary Files
- $ variable (ID of current shell)
- - The History File
  - Process ID Variables and Temporary Files
  - for constructing temp filenames : Process ID Variables and Temporary Files
- difference between job numbers and : Process IDs and Job Numbers
processes
- Process Handling
- (see also jobs)
- daemons : BSD
- group leaders
- - System V
  - BSD
- in pathological states
- - BSD
  - Coroutines
- performance characteristics of : Advantages and Disadvantages of Coroutines
profile
- Enabling Command-line Editing
- The History File
- The .profile File
- Environment Variables
- I/O Redirectors
- Reading lines from files
- for setting up restricted shell environment : Restricted Shell
prompting
- in read statement : Reading User Input
prompts : Prompting Variables
- customizing
- - with command number : Prompting Variables
  - with current directory
  - - Prompting Variables
    - Quoting
  - features in next release : The Future of the Korn Shell
  - with user name : Prompting Variables
  - with machine name : Command Substitution
- primary : Prompting Variables
- processing of PS1 : Quoting
ps
- ps
- Nested Subshells
- -a
- - ps
  - BSD
- -ax (BSD) : BSD
- -e (System V) : BSD
- listing all processes on the system : BSD
- output of BSD version : ps
- output of System V version : ps
PS1
- Prompting Variables
- Command Substitution
- Quoting
- Types of Global Customization
- bash
- command subsitution in next release : The Future of the Korn Shell
PS2 : Prompting Variables
PS3
- Prompting Variables
- select
- command subsitution in next release : The Future of the Korn Shell
PS4
- Prompting Variables
- Set Options
- in kshdb : Debugger Functions
public domain Korn shell
- Korn Shell Versions
- Related Shells
- pdksh
- documentation : pdksh
- for OS/2 : Workalikes on PC Platforms
pushd
- Advanced Examples: pushd and popd
- Exit Status and Return
- File Attribute Checking
- Arithmetic Variables and Assignment
- Types of Global Customization
- bash
- additional arguments : Arithmetic Variables and Assignment
- functionality : Advanced Examples: pushd and popd
PWD
- Prompting Variables
- Miscellaneous Variables
- Environment Variables
- Exit Status and Return
- Command-line Processing

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