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Index: S

• filename extension : Filename Extensions
• sadp command : The I/O Subsystem
• sar utility : The Memory Subsystem
• savedirs shell variable : The Shells' pushd and popd Commands
• savehist shell variable
• • Special C Shell Variables
  • Picking Up Where You Left Off
• saving command lines to file : Anyone Can Program the Shell
• sc program
• • It's Great to Have a Spreadsheet
  • Quick Descriptions of What's on the Disc
  • advantages : It's Great to Have a Spreadsheet
  • commands : It's Great to Have a Spreadsheet
  • disadvantages : Business Graphics with ipl
  • ipl program used with : Business Graphics with ipl
  • Microsoft Excel compared to : It's Great to Have a Spreadsheet
  • printing from
  • • It's Great to Have a Spreadsheet
    • Business Graphics with ipl
• scale command : bc: Simple Math at the Shell Prompt
• SCCS (Source Code Control System) : Protecting Files with SCCS or RCS
• schedules : (see calendar program)
• scp shell function : Simulated Bourne Shell Functions and Aliases
• scratchpad, creating in terminal windows : Scratchpad on Your Screen
• screen : (see terminals)
• screen program
• • Detaching a Session with screen
  • Running Multiple Shell Sessions with screen
  • Quick Descriptions of What's on the Disc
• screen variable : Checklist: Screen Size Messed Up?
• screensize file
• • Screen Width and Height: screensize
  • Quick Descriptions of What's on the Disc
• Scribe program : Scribe
• script interpreters : (see shells)
• script program
• • Send Output Two or More Places with tee
  • Copy What You Do with script
  • ending : Copy What You Do with script
  • examples : Copy What You Do with script
  • running with lastcomm : lastcomm: What Commands Are Running and How Long Do They Take?
• script.tidy script
• • Cleaning script Files
  • Quick Descriptions of What's on the Disc
  • examples : Cleaning script Files
  • setting control characters : Cleaning script Files
• scripts : (see shell scripts)
• SCROLL LOCK button : Output Stopped?
• scrolling error messages : Problems Piping to a Pager
• SCSI tapes : Writing a Tape Drive on a Remote Machine
• SD (Send Data) light : Stalled Data Connection?
• sdiff command
• • Side-by-Side diffs: sdiff
  • Choosing Sides with sdiff
  • Quick Descriptions of What's on the Disc
• search path
• • cshrc.$HOST File for Per Host Setup
  • Shell Search Paths
  • setting : Setting Your Search Path
  • specifying : Internal and External Commands
• search.el file
• • Rational Searches
  • Quick Descriptions of What's on the Disc
• searching
• • The find Command Is Great; The Problem Is Finding How to Use It
  • (see also find command)
  • by age : Searching for Old Files
  • for commands : findcmd: Find a Command in Your Search Path
  • in databases : Finding Files (Much) Faster with a find Database
  • databases using index : The index Database Program
  • for directories : Variables Help You Find Directories and Files
  • for doubled words : Find a a Doubled Word
  • duplicate files/directories : Finding All Directories with the Same Name
  • file content : (see files, searching)
  • for file types : Finding File Types
  • files
  • • Search for Text with grep
    • The Multipurpose jot Command
  • for files
  • • Get File List by Editing Output of ls -l, grep, etc.
    • Variables Help You Find Directories and Files
    • containing specific words : lookfor: Which File Has that Word?
  • for links : Finding the Links to a File
  • manual pages
  • • The apropos Command
    • apropos on Systems Without apropos
  • by owner/group : Searching by Owner and Group
  • by permissions
  • • Running Commands on What You Find
    • Searching for Files by Permission
  • permissions for : (see execute permission)
  • by size : Searching for Files by Size
  • text files : Finding Text Files with findtext
  • by type : Searching for Files by Type
  • for unconnected symbolic links : oldlinks: Find Unconnected Symbolic Links
• secondary prompts : Multiline Commands, Secondary Prompts
• security
• • circumventing write access : Loophole: Modifying Files Without Write Access
  • clear command and : Clear Your Terminal for Security, to Stop Burn-in
  • encryption : (see encryption)
  • encryption for : (see encryption)
  • permissions : (see permissions)
  • rm command and : rm and Its Dangers
• sed editor
• • Automatic Setups for Different Terminals
  • Two Things You Must Know About sed
  • Preprocessing troff Input with sed
  • addressing : sed Addressing Basics
  • addup script using : Total a Column with addup
  • branch command
  • • Making Edits Everywhere Except...
    • Alphabetical Summary of sed Commands
  • C shell and quoting : sed Newlines, Quoting, and Backslashes in a Shell Script
  • checksed script : checksed
  • command line : Invoking sed
  • command list : Quick Reference: sed
  • delimiter characters : Delimiting a Regular Expression
  • delimiters : Using a Control Character in a Script
  • -e option : Online Phone and Address Lists
  • edit non-matching lines : Making Edits Everywhere Except...
  • editing scripts : Power Tools for Editing
  • eval combined with : Using sed
  • example expressions : ASCII Characters: Listing and Getting Values
  • example scripts : Putting awk, sed, etc., Inside Shell Scripts
  • examples
  • • Using sed
    • Online Phone and Address Lists
    • apropos on Systems Without apropos
  • executing files using commands
  • • d : File That Shows Itself... and What #! Does
  • -f option : Don't Need a Shell for Your Script? Don't Use One
  • fixing PATH : Find All Command Versions with whereiz
  • hold space : Hold Space: The Set-Aside Buffer
  • multiline delete : Multiline Delete
  • multiple matches on a line : Search & Replacement: One Match Among Many
  • -n option : Using sed
  • next command : Alphabetical Summary of sed Commands
  • Next command : Making Edits Across Line Boundaries
  • order dependency : Order of Commands in a Script
  • organizing scripts : Organizing Nonexecutable Scripts
  • parsing using : Using sed
  • pattern space
  • • Hold Space: The Set-Aside Buffer
    • Making Edits Across Line Boundaries
  • patterns split across lines : Searching for Patterns Split Across Lines
  • quit command
  • • Uses of the sed Quit Command
    • Alphabetical Summary of sed Commands
  • quoting control characters : Newlines in a sed Replacement
  • referenced matched string : Referencing the Search String in a Replacement
  • runsed script : runsed
  • substitution commands : Using a Control Character in a Script
  • test command : The sed Test Command
  • transform command
  • • Transformations on Text
    • Transforming Part of a Line
    • Alphabetical Summary of sed Commands
• sedman script : Quick Descriptions of What's on the Disc
• "segmentation fault (core dumped)" error message : Common UNIX Error Messages
• segmentation violation message : What Are Signals?
• segmentation violation signal : (see SEGV (segmentation violation) signal)
• SEGV (segmentation violation) signal : What Are Signals?
• self-restarting jobs : Automatically Restarting at Jobs
• semicolon : (see )
• serial line : Making Sense Out of the Terminal Mess
• serial line driver : Making Sense Out of the Terminal Mess
• serial line modes : What termcap and terminfo Do and Don't Control
• sessions, detaching : Detaching a Session with screen
• set command
• • Shell Variables
  • Variables Help You Find Directories and Files
  • The Bourne Shell set Command
  • arguments to : The Bourne Shell set Command
  • -e option : Watch Out for Bourne Shell -e Bug
  • examples
  • • Standard Command-Line Parsing
    • The Bourne Shell set Command
    • Making a for Loop with Multiple Variables
    • Shell Lockfile
    • cal That Marks Today's Date
  • listing variables : What Environment Variables Are Good For
  • parsing using : Using set
  • quoting : The Bourne Shell set Command
  • variables
  • • IFS : Using set
  • wildcards : The Bourne Shell set Command
  • -xv option : Use -xv
• set directory command : Out of Temporary Space? Use Another Directory
• set echo command : Approved Shells: Using Unapproved Login Shell
• set noglob command : Setting the TERMCAP Variable with tset
• set nonomatch command : Automatic File Cleanup
• set prompt test
• • Quick Login
  • Speeding Up Your C Shell with set prompt Test
• set verbose echo command : Choosing the Shell Run (We Hope) by at
• setgid bit : Group Permissions in a Directory with the setgid Bit
• setprompt alias : dirs in Your Prompt: Better than $cwd
• setup alias : Second Alias and Command File
• setup files : (see configuration files)
• • storing information : Using C Shell Arrays
• SGID (set group ID) bit
• • File Access Permissions
  • Access to Directories
• sh (Bourne shell)
• • There Are Many Shells
  • UNIX Networking and Communications
  • Managing Processes: Overall Concepts
  • Types of Shells
  • (see also rsh utility)
  • { } filename wildcards, adding : Adding { } Operators to Korn (and Bourne) Shells
  • advantages : Types of Shells
  • aliases : Shell Functions
  • arrays in : Arrays in the Bourne Shell
  • background processing
  • • How Background Processing Works
    • Some Gotchas with Background Processing
  • C shell compared to
  • • Types of Shells
    • Why Not?
    • Shell Developing Considered Harmful
  • case statements
  • • Automatic Setups for Different Terminals
    • Test String Values with Bourne Shell case
  • command lines as scripts : Writing a Simple Shell Program
  • command-line arguments in scripts : Handling Command-Line Arguments in Shell Scripts
  • comments in scripts
  • • Writing a Simple Shell Program
    • The Unappreciated Bourne Shell ":" Operator
  • conditional expressions : Test Exit Status with the if Statement
  • creating empty file : Setting File Modification Time with touch
  • date formats : External Commands Send Signals to Set Variables
  • debugging scripts
  • • Test Exit Status with the if Statement
    • Tips for Debugging Shell Scripts
  • defining variables : Shell Variables
  • -e option : Watch Out for Bourne Shell -e Bug
  • ending scripts : Set Exit Status of a Shell (Script)
  • environment variables
  • • Predefined Environment Variables
    • Variable Syntax
  • example scripts
  • • Writing a Simple Shell Program
    • Bourne Shell Used Here
    • Testing How Your System Executes Files
    • Test String Values with Bourne Shell case
    • Exit Status of UNIX Processes
    • Test Exit Status with the if Statement
    • Testing Your Success
    • Looping Until a Command Succeeds
    • Set Exit Status of a Shell (Script)
  • executing scripts : Testing How Your System Executes Files
  • executing scripts via : Choosing the Shell Run (We Hope) by at
  • features : Bourne Shell Used Here
  • for loop : The Bourne Shell for Loop
  • grouping commands : Using {list} to Group Bourne Shell Commands
  • hangups in : nohup
  • if statements : Test Exit Status with the if Statement
  • ignoreeof variable : Stop Accidental C Shell Logouts
  • interrupted : Handling Signals to Child Processes
  • jot command used in : The Multipurpose jot Command
  • logging out of : Running Commands at Bourne/Korn Shell Logout
  • loops in : Loops That Test Exit Status
  • mail notification : For Bourne Shell Users
  • multiline commands : Multiline Commands, Secondary Prompts
  • number crunching in : The Multipurpose jot Command
  • overriding environment variables : Running a Command with a Temporarily Different Environment
  • path names in scripts : Writing a Simple Shell Program
  • pipelines in : More Elaborate Combinations
  • .profile file : Bourne Shell
  • quoting in : Quoting
  • quoting in : Bourne Shell Quoting
  • random number generators : The Multipurpose jot Command
  • reading .profile file : Checklist: Terminal Hangs When I Log In
  • reading arguments : Is It "2>&1 file" or "> file 2>&1"? Why?
  • redirecting input/output
  • • Using Standard Input and Output
    • Send (only) Standard Error Down a Pipe
  • replacing with C shells
  • • Making Sure Your Script Runs with Bourne Shell, Without #!
    • The exec Command
  • running scripts in
  • • Bourne Shell Used Here
    • Making Sure Your Script Runs with Bourne Shell, Without #!
  • script file extension : Filename Extensions
  • scripts, in general : Writing a Simple Shell Program
  • simulated functions and aliases : Simulated Bourne Shell Functions and Aliases
  • special characters/operators in : "Special" Characters and Operators
  • standard input : Reading Files
  • standard output : More Elaborate Combinations
  • string editing operators : Parameter Substitution
  • trap command : External Commands Send Signals to Set Variables
  • trapping signals : Signals
  • tset command : Setting the Terminal Type When You Log In
  • -v option : Special C Shell Variables
  • variable syntax : Variable Syntax
  • variable tracing : verbose and echo Variables Show Quoting
  • -x option : Special C Shell Variables
• sh command name : Aborting Programs
• sh filename extension : Filename Extensions
• sh_logout file : Stop Accidental Bourne Shell Logouts
• SH_EXECD environment variable : Approved Shells: Using Unapproved Login Shell
• sh_init : Quick Descriptions of What's on the Disc
• • on PowerTools disk : Which Version Am I Using?
• sh_logout : Quick Descriptions of What's on the Disc
• shar archives : Unsharring the Sources
• shar filename extension : Filename Extensions
• shar files : Introduction to Shell Archives
• • uuencoded : My Favorite Is !$
• shar program
• • Introduction to Shell Archives
  • Quick Descriptions of What's on the Disc
• shareable files : Directory Structure
• SHAREPREFIX, tutorial : Running the Build Scripts
• she (Bourne shell)
• • accidental logouts : Stop Accidental Bourne Shell Logouts
• shebang : (see #! notation)
• shell archives
• • Introduction to Shell Archives
  • Simple Version of unshar
  • filename extension : Filename Extensions
  • with GNU tar : GNU tar Sampler
• SHELL environment variable : Predefined Environment Variables
• shell escapes : Shell Escapes: Running One UNIX Command While Using Another
• • starting a subshell : Subshells
• shell functions : Shell Functions
• • simulated : Simulated Bourne Shell Functions and Aliases
• shell metacharacters : (see wildcards)
• shell parameters, with simulated functions : Simulated Bourne Shell Functions and Aliases
• shell prompts
• • backspacing over : Why Some Systems Backspace over Prompts
  • PS1, PS2 variables : Predefined Environment Variables
  • setting : Why Change Your Prompt?
  • typing commands at : Managing Processes: Overall Concepts
• shell scripts
• • What Makes a Shell Script?
  • Subshells
  • Everyone Should Learn Some Shell Developing
  • Interactive Use vs. Shell Scripts
  • arguments passed to : Anyone Can Program the Shell
  • commenting
  • • Putting awk, sed, etc., Inside Shell Scripts
    • The Story of : # #!
  • control characters in : Using a Control Character in a Script
  • directories : Internal and External Commands
  • on enclosed tutorial : Introduction
  • -f option
  • • The Story of : # #!
    • Don't Need a Shell for Your Script? Don't Use One
  • highlighting prompts issued by : Using terminfo Capabilities in Shell Programs
  • interrupted : Trapping Exits Caused by Interrupts
  • naming : Picking a Name for a New Command
  • nonexecutable : Organizing Nonexecutable Scripts
  • permissions
  • • Shell Scripts Must be Readable and (Usually) Executable
    • Writing a Simple Shell Program
  • reading files line-by-line : Handling Files Line-by-Line
  • reading from standard input
  • • Shell Can Read a Script from its Standard Input, But...
    • Shell Scripts On-the-Fly from Standard Input
  • running
  • • The Story of : # #!
    • Don't Need a Shell for Your Script? Don't Use One
    • Making Sure Your Script Runs with Bourne Shell, Without #!
  • running as a daemon : Printer Queue Watcher: A Restartable Daemon Shell Script
  • self-printing : Fun with #!
  • self-removing
  • • Fun with #!
    • Removing a File Once It's Opened - for Security and Easy Cleanup
  • self-renaming : Fun with #!
  • sourceable : Sourceable Scripts
  • sourcing : Reading Files with the . and source Commands
  • submitting for execution at a later time : The at Command
  • terminfo capabilities in : Using terminfo Capabilities in Shell Programs
  • throwaway : Throwaway Scripts for Complicated Commands
  • variables set by : Bourne Shell Debugger Shows a Shell Variable
  • without using shell : The Story of : # #!
  • -xv option : Use -xv
• shell variables
• • Variables Help You Find Directories and Files
  • Quoting and Command-Line Parameters
  • (see also environment variables; variables; under specific variable name)
  • editing : String Editing in ksh and bash
  • eval command and
  • • eval: When You Need Another Chance
    • Simulated Bourne Shell Functions and Aliases
  • iterating over arguments : Quoting and Command-Line Parameters
  • setting : Shell Variables
• shell wildcards : (see wildcards)
• shell wrappers : Testing and Using a sed Script: checksed, runsed
• shells
• • Who Listens to What You Type?
  • Shell Command-Line Editing
  • What's a Shell, Anyway?
  • Types of Shells
  • (see also command interpreters; command line)
  • (see also under specific shell name)
  • approved : Approved Shells: Using Unapproved Login Shell
  • as controlling process : Managing Processes: Overall Concepts
  • curly braces in
  • • Wildcards
    • Who Handles Wildcards?
  • customizing : Customizing the Shell
  • executing external commands : How the Shell Executes Other Commands
  • giving absolute pathnames to : File That Shows Itself... and What #! Does
  • interpreting commands : What the Shell Does
  • invoking : File That Shows Itself... and What #! Does
  • login shells : Making a "Login" Shell
  • multiple shell sessions : Running Multiple Shell Sessions with screen
  • passing command history to : Pass History to Another Shell
  • developing : Anyone Can Program the Shell
  • reading scripts
  • • Shell Can Read a Script from its Standard Input, But...
    • Shell Scripts On-the-Fly from Standard Input
  • running : Which Shell Am I Running?
  • running programs without : Don't Need a Shell for Your Script? Don't Use One
  • selecting : There Are Many Shells
  • starting a subshell from : Subshells
  • syntax : Using Standard Input and Output
  • temporary files : Unique Names for Temporary Files
  • tokens : (see tokens)
  • types of : Types of Shells
  • understanding # as comment : Don't Need a Shell for Your Script? Don't Use One
  • -v option : Shell Scripts On-the-Fly from Standard Input
  • variants of : Managing Processes: Overall Concepts
• shells file : Approved Shells: Using Unapproved Login Shell
• shellutils : Quick Descriptions of What's on the Disc
• shift command
• • Handling Arguments with while and shift
  • How to Unset all Command-Line Parameters
  • examples
  • • Handling Arguments with while and shift
    • How to Unset all Command-Line Parameters
  • handling command-line arguments : Handling Arguments with while and shift
  • in Bourne shell : Using C Shell Arrays
  • in C shells : Using C Shell Arrays
  • in while loops : Handling Arguments with while and shift
  • removing command-line arguments : With a Loop
  • unsetting command line parameters : How to Unset all Command-Line Parameters
• SHLVL environment variable : Show Subshell Level with $SHLVL
• showmatch script
• • Just What Does a Regular Expression Match?
  • Quick Descriptions of What's on the Disc
• shrink-wrapped software for UNIX : Shrink-Wrapped Software for UNIX
• shutdown program : The Kernel and Daemons
• Sierra, Mike : Multiline Shell Prompts
• signal handling : What Are Signals?
• • in Bourne shells : Handling Signals to Child Processes
  • of subprocesses : Handling Signals to Child Processes
• signal names/numbers for trap command : Trapping Exits Caused by Interrupts
• signals, interprocess communication : What Are Signals?
• signals, trapping : Signals
• SIGWINCH (window changed) signal : Checklist: Screen Size Messed Up?
• sin command (awk) : Alphabetical Summary of Commands
• sine function : bc's Sine and Cosine Are in Radians
• single quotes : (see ')
• size, file
• • Listing Files by Age and Size
  • Limiting File Sizes
  • (see file size)
  • limits for : Making an Arbitrary-Size File for Testing
  • searching by : Searching for Files by Size
• sl script
• • Showing the Actual Filenames for Symbolic Links
  • Watching Directories
  • Quick Descriptions of What's on the Disc
• slash : (see /)
• sleep command
• • Running Commands When You Log Out
  • For the Impatient: Type-Ahead
  • Off-Peak Job Submission
  • Quick Descriptions of What's on the Disc
  • in C shell : Built-Ins
  • examples
  • • Handling Signals to Child Processes
    • Built-Ins
  • keeping port settings : Using sleep to Keep Port Settings
  • in leave program : leave: A Maddening Aid to Quitting on Time
  • uses of : Waiting a Little While: sleep
• sls program
• • sls: Super ls with Format You Can Choose
  • Quick Descriptions of What's on the Disc
• smart echoing : Why Some Systems Backspace over Prompts
• smiley program : Quick Descriptions of What's on the Disc
• smileys : You Don't Have Enough Smileys?
• soft disk quota limits : Disk Quotas
• soft links : (see symbolic links)
• soft mounting of NFS : Checklist: Terminal Hangs When I Log In
• software
• • on enclosed tutorial
  • • Introduction
    • Don't Have a tutorial Drive?
  • installation programs : Installing Pre-Compiled Binaries
  • source code
  • • Other Ways to Get the Software
    • Building Programs from Source Code
• sort command : Sort Fields: How sort Sorts
• • alphabetic vs. numeric : Alphabetic and Numeric Sorting
  • case-insensitive sorts : Ignoring Blanks
  • dictionary order : Case-Insensitive Sorts
  • fields : Sort Fields: How sort Sorts
  • ignoring blanks : Dealing with Repeated Lines
  • month order : Dictionary Order
  • reverse sort : Month Order
  • unique parameter : Dealing with Repeated Lines
• sorting
• • by last name : Sorting a List of People by Last Name
  • lines by length : lensort: Sort Lines by Length
  • multiline entries : Sorting Multiline Entries
• Source Code Control System : (see SCCS)
• source command
• • in C shell : Built-Ins
  • redirecting : Built-Ins
• source command (ex) : Useful ex Commands
• sourceable scripts : Sourceable Scripts
• SOURCEDIR, tutorial : Running the Build Scripts
• sourcing shell scripts : Reading Files with the . and source Commands
• • in C shell : Built-Ins
• space characters : (see whitespace)
• sparse files : Huge Files Might Not Take a Lot of Disk Space
• spaste program : Quick Descriptions of What's on the Disc
• spawning processes : fork and exec
• special characters
• • Automatically Appending the Date to a Filename
  • (see also pattern matching; wildcards)
  • in Bourne shell (sh) : Special Characters
  • cat command for viewing : What's in That White Space?
  • escape : ASCII Characters: Listing and Getting Values
  • in filenames : Filenames
  • filenames with
  • • Quoting Handles Special Characters in Filenames
    • Showing Non-Printable Characters in Filenames
    • Deleting Files with Odd Names
• special keys, characters sent by : Finding Out What Characters Your Terminal's Special Keys Send
• speed : (see performance)
• @speed, <speed, >speed calculations : Setting the Terminal Type When You Log In
• spell checking
• • Fast Searches and Spelling Checks with "look"
  • The UNIX spell Command
  • ispell program : Check Spelling Interactively with ispell
• spell command
• • The UNIX spell Command
  • How Do I Spell That Word?
  • (see also ispell program)
  • -v option : Inside spell
  • -x option : Inside spell
• spellhist file : Inside spell
• spellprog program : Inside spell
• split command (awk) : Alphabetical Summary of Commands
• split command, loops using : Use with Loops
• split program : Splitting Files at Fixed Points: split
• Spool was an acronym - Simultaneous Printing Off and On Line. : Introduction to Printing
• spooling system : Introduction to Printing
• • symbolic links : Using Symbolic Links for Spooling
• spreadsheets, calculators vs. : It's Great to Have a Spreadsheet
• sprintf command (awk) : Alphabetical Summary of Commands
• sqrt command (awk) : Alphabetical Summary of Commands
• squoze script : Quick Descriptions of What's on the Disc
• srand command (awk) : Alphabetical Summary of Commands
• stack, directory : The Shells' pushd and popd Commands
• stale symbolic links : Creating and Removing Links
• stalled data connections : Stalled Data Connection?
• standard error
• • Send (only) Standard Error Down a Pipe
  • Testing Your Success
  • Overview: Open Files and File Descriptors
  • (see also debugging; errors)
  • piping to pager : Use -xv
  • redirecting
  • • Overview: Open Files and File Descriptors
    • n>&m: Swap Standard Output and Standard Error
    • Writing Files
• standard I/O facility : Using Standard Input and Output
• standard input
• • Using Standard Input and Output
  • The "Filename" -
  • Overview: Open Files and File Descriptors
  • in C shell : Reading Files
  • in Bourne shell : Reading Files
  • including directly on cron command line : Including Standard Input Within a cron Entry
  • reading scripts from
  • • Shell Can Read a Script from its Standard Input, But...
    • Shell Scripts On-the-Fly from Standard Input
  • redirecting
  • • Overview: Open Files and File Descriptors
    • Reading Files
• standard output
• • Overview: Open Files and File Descriptors
  • Use -xv
  • (see also debugging output)
  • in Bourne shell : More Elaborate Combinations
  • in C shell : More Elaborate Combinations
  • debugging : Use -xv
  • redirecting
  • • Overview: Open Files and File Descriptors
    • n>&m: Swap Standard Output and Standard Error
    • Use -xv
  • redirecting with tpipe : tpipe-Redirecting stdout to More than One Place
• stat program
• • How UNIX Keeps Track of Files: Inodes
  • Read an Inode with stat
  • Quick Descriptions of What's on the Disc
• state, job : Notification When Jobs Change State
• status command (lpc) : Printer Control with lpc
• status shell varible : Special C Shell Variables
• status variable
• • Test Exit Status with the if Statement
  • (see also exit status)
• stderr : (see standard error)
• stdin : (see standard input)
• stdout : (see standard output)
• stem-derivative rule : Inside spell
• sticky bit
• • File Access Permissions
  • Access to Directories
  • Protecting Files with the Sticky Bit
• stop command : System Overloaded? Try Stopping Some Jobs
• stop list, spelling : Inside spell
• STOP signal : What Are Signals?
• stream editor : (see sed editor)
• stree script
• • stree: Simple Directory Tree
  • Quick Descriptions of What's on the Disc
• string capabilities : How termcap and terminfo Describe Terminals
• strings
• • editing
  • • csh : String Editing (Colon) Operators
    • ksh and bash : String Editing in ksh and bash
  • editing operators : (see operators, string editing)
• strip command : Save Space in Executable Files with strip
• stripper script
• • Save Space in Executable Files with strip
  • Quick Descriptions of What's on the Disc
• stty command
• • Setting Your Erase, Kill, and Interrupt Characters
  • Delving a Little Deeper
  • How We Made It This Far (Back?)
  • Quick Descriptions of What's on the Disc
  • changing communication parameters on the fly : Making Sense Out of the Terminal Mess
  • finding out terminal settings with : Find Out Terminal Settings with stty
  • stty -a command : Checklist: Screen Size Messed Up?
  • stty -g command : Checklist for Resetting a Messed Up Terminal
  • stty cbreak command : Reading Verrrry Long Lines from the Terminal
  • stty icanon command : Reading Verrrry Long Lines from the Terminal
  • stty nostop command : Stop Background Output with stty tostop
  • stty size command : Checklist: Screen Size Messed Up?
• stty size command : Checklist: Screen Size Messed Up?
• su command
• • Tip for Changing Account Setup: Keep a Shell Ready
  • The su Command Isn't Just for the Superuser
  • Quick Descriptions of What's on the Disc
  • starting a subshell : Subshells
  • su stucklogin : Checklist: Terminal Hangs When I Log In
• sub command (awk) : Alphabetical Summary of Commands
• subdirectories : (see directories)
• subprocess : (see child processes)
• subroutines, dot (.) command compared to : Reading Files with the . and source Commands
• subshell operators
• • Shell Setup Files-Which, Where, and Why
  • How to tee Several Commands Into One File
• subshells : Subshells
• • ( ) operators for : The () Subshell Operators
  • levels : Show Subshell Level with $SHLVL
  • redirected loops running in : The Ins and Outs of Redirected I/O Loops
  • running : Watch Out for Bourne Shell -e Bug
  • setting command-line parameters : The Bourne Shell set Command
  • starting : Approved Shells: Using Unapproved Login Shell
  • su command and : (see su command)
• substitute command (ex) : Useful ex Commands
• substitute command (sed)
• • script.tidy using : Cleaning script Files
• substr command (awk) : Alphabetical Summary of Commands
• SUID (set user ID) bit
• • File Access Permissions
  • Access to Directories
• SunExpert magazine, article on awk : Putting awk, sed, etc., Inside Shell Scripts
• superuser : (see root user)
• susp key : Setting Your Erase, Kill, and Interrupt Characters
• suspend command : Subshells
• swap space, errors caused by lack of : Common UNIX Error Messages
• swapon command : Common UNIX Error Messages
• swapping : The Memory Subsystem
• "swaps" : The csh time variable
• switch statements : Quick Reference: C Shell switch Statement
• • examples : Quick Reference: C Shell switch Statement
  • if statemtents compared to : Quick Reference: C Shell switch Statement
  • in C shells : Quick Reference: C Shell switch Statement
• symbolic links
• • Which Directory Am I in, Really?
  • More About Links
  • Save Space with a Link
  • advantages : Files with Two or More Names
  • between directories : Linking Directories
  • copying : Copying Directory Trees with cp -r
  • disk space and : Automatic Setup When You Enter/Exit a Directory
  • filenames for : Showing the Actual Filenames for Symbolic Links
  • finding : Searching for Files by Type
  • finding unconnected : oldlinks: Find Unconnected Symbolic Links
  • relinking : Relinking Multiple Symbolic Links
  • stale : Creating and Removing Links
• symbols
• • With the $@"
  • (see also under specific symbol names)
  • in filenames and pathnames : With the $@"
  • terms for : Type Bang Splat. Don't Forget the Rabbit Ears
• sync program : The Kernel and Daemons
• "Syntax error" error message : Stop Syntax Errors in Numeric Tests
• system
• • commands, replacing : Setting Path in Shell Setup Files
  • load, checking : Checking System Load: uptime
  • overloaded : System Overloaded? Try Stopping Some Jobs
  • password file contents : Which Shell Am I Running?
  • performance issues : What Makes Your Computer Slow? How Do You Fix It?
  • resources, fundamental : What Makes Your Computer Slow? How Do You Fix It?
  • system time
  • • Timing Programs
    • Why Is the System So Slow?
  • system-state CPU time : Why Is the System So Slow?
  • variables (awk) : awk System Variables
• system command (awk) : Alphabetical Summary of Commands
• System V UNIX
• • alternatives for : Which Version Am I Using?
  • C shell nice command : System V C Shell nice
  • manual page categories : UNIX Online Documentation
  • printing commands : System V Printing Commands
  • standalone nice command : System V Standalone nice
  • tape archiver (cpio) : System V Tape Archiver: cpio
  • which command : Which Version Am I Using?

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