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Index: S

• SCO : Control Keys
• scripts
• • built-in commands implemented as : Shell Scripts and Functions
  • comments in : Syntax of String Operators
  • order of precedence in command lookup
  • • Functions
    • Command-line Processing
  • running : Shell Scripts and Functions
• SECONDS : Miscellaneous Variables
• security
• • Summary of Korn Shell Features
  • Tracked Aliases
  • System Security Features
  • Korn shell features pertaining to : System Security Features
  • problem with PATH
  • • Command Search Path
    • System Break-in Scenario
  • restricted shell : (see restricted shell)
  • suid interactive shells : System Break-in Scenario
  • Trojan horse schemes : System Break-in Scenario
• sed
• • Standard I/O
  • Patterns and Regular Expressions
  • Korn shell versus awk/egrep regular expressions
  • Installing the Korn Shell as the Standard Shell
• select
• • Summary of Korn Shell Features
  • select
  • Arrays
  • Reading User Input
  • The Bourne Shell
  • The IEEE 1003.2 POSIX Shell Standard
  • description : select
  • lists of names in : select
  • PS3 prompt in : select
  • redirecting I/O to : I/O Redirection and multiple commands
  • syntax : select
• set : (see options)
• • +o (turn off option)
  • • Options
    • Set Options
  • -A (array assignment)
  • • Arrays
    • String Formatting Options
  • -o (turn on option)
  • • Options
    • Set Options
    • The Bourne Shell
  • output of in next release : The Future of the Korn Shell
• SHELL
• • Miscellaneous Variables
  • Environment Variables
  • The Bourne Shell
• shell compilers : Debugging Shell Programs
• shell variables, list of : Built-in Shell Variables
• shift
• • shift
  • getopts
• signals
• • Job Control
  • Signals
  • ALRM
  • • Workalikes on PC Platforms
    • The Future of the Korn Shell
  • DEBUG : (see fake signals)
  • description : Signals
  • effect of on processes : kill
  • ERR : (see fake signals)
  • EXIT : (see fake signals)
  • fake : (see fake signals)
  • hangup : (see HUP)
  • HUP : Ignoring Signals
  • ignoring : Ignoring Signals
  • INT
  • • Control-key Signals
    • kill
    • trap
    • Traps and Functions
    • Process ID Variables and Temporary Files
    • EXIT
    • The IEEE 1003.2 POSIX Shell Standard
    • Workalikes on PC Platforms
  • KILL
  • • Control-key Signals
    • kill
    • System V
  • lack of propagation to subshells
  • • Subshell Inheritance
    • The Future of the Korn Shell
  • listing : Signals
  • other types of : Control-key Signals
  • in POSIX shell : The IEEE 1003.2 POSIX Shell Standard
  • propagation to subshells in next release : The Future of the Korn Shell
  • QUIT
  • • Control-key Signals
    • kill
    • System V
  • sending with control keys : Control-key Signals
  • shown in background job status messages : kill
  • specifying in trap command : trap
  • STOP : Workalikes on PC Platforms
  • TERM
  • • kill
    • trap
    • Process ID Variables and Temporary Files
    • EXIT
    • The IEEE 1003.2 POSIX Shell Standard
  • trapping : (see traps)
  • TSTP
  • • Job Control
    • Control-key Signals
• sleep : trap
• SNOBOL : Shell Variables
• sort
• • Standard I/O
  • I/O Redirection
  • Pipelines
  • Background Jobs
  • Background I/O
  • Syntax of String Operators
  • for
  • read
  • Suspending a Job
• special characters : More on Variable Syntax
• spell : Shell Scripts and Functions
• stacks : Advanced Examples: pushd and popd
• Stallman, Richard : bash
• standard I/O : (see I/O)
• string I/O : (see print, read)
• string operators
• • String Operators
  • The Bourne Shell
  • # (length) : Length Operator
  • :+
  • • Syntax of String Operators
    • for
  • :-
  • • Syntax of String Operators
    • Advanced Examples: pushd and popd
    • Break conditions
  • := : Syntax of String Operators
  • :?
  • • Syntax of String Operators
    • Advanced Examples: pushd and popd
  • in next release : The Future of the Korn Shell
  • summary of functionality : String Operators
  • syntax : Syntax of String Operators
• stty : Control Keys
• • to customize control-key signals : Control-key Signals
• subprocesses : Customization and Subprocesses
• subshells
• • Shell Scripts and Functions
  • Process Handling
  • Subshells
  • information passed from parent processes : Customization and Subprocesses
  • inheritance of properties from parent shells : Subshell Inheritance
  • nested
  • • Nested Subshells
    • Limitations
    • The IEEE 1003.2 POSIX Shell Standard
    • compared to code blocks : Nested Subshells
• suid : Workalikes on PC Platforms
• suid shell scripts
• • System Break-in Scenario
  • Privileged Mode
  • creating : System Break-in Scenario
  • dangers of : System Break-in Scenario
• SunOS
• • Korn Shell Basics
  • History of UNIX Shells
  • Control Keys
  • Command Substitution
• system calls
• • exec : Coroutines
  • fork : Coroutines
  • pipe : Coroutines
  • wait : Coroutines
• System III : Control Keys
• System V
• • Control Keys
  • Terminal Types
• System V Release 4
• • The Korn Shell
  • Getting the Korn Shell

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