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Index: C

• filename extension
• • Filename Extensions
  • Functions, Libraries, and Header Files
• function (for changing directories) : cd by Directory Initials
• language : Compiling Source Code
• • compiling : The make Program
  • source code : Building Programs from Source Code
• program header file extension : Filename Extensions
• program source file extension : Filename Extensions
• shell
• • .cshrc file : (see cshrc file)
• shell (csh)
• • There Are Many Shells
  • Managing Processes: Overall Concepts
  • Types of Shells
  • accidental logouts : Stop Accidental C Shell Logouts
  • advantages : Types of Shells
  • aliases : How to Put if-then-else in a C Shell Alias
  • array support : Arrays in the Bourne Shell
  • arrays in : Using C Shell Arrays
  • automatically killing background processes : Automatically Kill Background Processes on Logout in csh
  • avoiding alias loops : Avoiding C Shell Alias Loops
  • background processing : How Background Processing Works
  • bash shells compared to : Why Not?
  • Bourne shell compared to
  • • Why Not?
    • Shell Developing Considered Harmful
  • Bourne shell replacing
  • • Making Sure Your Script Runs with Bourne Shell, Without #!
    • The exec Command
  • bugs in : Shell Developing Considered Harmful
  • built-in string operators : Faster Prompt Setting with Built-Ins
  • command history
  • • The Lessons of History
    • (see history of command)
  • command name for : Aborting Programs
  • command tools and : The Kernel and Daemons
  • configuration files : Shell Setup Files Aren't Read When You Want Them to Be?
  • creating empty file : Setting File Modification Time with touch
  • default prompt : Why Change Your Prompt?
  • defining variables : Shell Variables
  • disadvantages
  • • Types of Shells
    • Why Not?
    • Shell Developing Considered Harmful
  • echo command : Portability
  • editing history substitutions : String Editing (Colon) Operators
  • environment variables : Variable Syntax
  • error handling : Error Handling
  • eval command : Setting the Terminal Type When You Log In
  • executing scripts via : Choosing the Shell Run (We Hope) by at
  • expressions in
  • • Expressions
    • Examples
  • -f option : Quick Login
  • flow control in : Flow Control
  • foreach loop : Repeating a Command with a foreach Loop
  • history : When You Get Impatient
  • history characters : Changing C Shell History Characters with histchars
  • history file : Shell
  • if loops in : Expression Evaluation
  • importing commands : Which One Will the C Shell Use?
  • interpreting commands : Command-Line Evaluation
  • Korn shell compared to : Why Not?
  • .logout file : Running Commands When You Log Out
  • mail notification : For C Shell Users
  • managing file descriptors : File Descriptors
  • matching word, escaping : Here Documents
  • multiline commands : Multiline Commands, Secondary Prompts
  • nesting aliases : Setting Aliases Automatically, Unsetting Aliases
  • noclobber variable : Safe I/O Redirection with noclobber
  • operator precedence in : Expressions
  • overriding environment variables : Running a Command with a Temporarily Different Environment
  • parsing in : Stupid Parsing Bugs
  • passing command history to : Pass History to Another Shell
  • pipelines in : More Elaborate Combinations
  • quoting in
  • • Differences Between Bourne and C Shell Quoting
    • Quoting
  • random number generators : The Multipurpose jot Command
  • redirecting input/output : Redirection in C Shell: Capture Errors, Too?
  • redirecting stdin : Using Standard Input and Output
  • rehash command : bin Directory for Your Programs and Scripts
  • repeat command : The C Shell repeat Command
  • script file extension : Filename Extensions
  • set nonomatch command : Automatic File Cleanup
  • shell variables : Special C Shell Variables
  • special characters/operators in : "Special" Characters and Operators
  • speeding up : Speeding Up Your C Shell with set prompt Test
  • standard input : Reading Files
  • standard output : More Elaborate Combinations
  • stray prompt problems : Shell Prompt Causes Problems in vi, rsh, etc.
  • trapping signals : Signals
  • variable syntax : Variable Syntax
• shell scripts
• • exit status inserted : Exit Status of UNIX Processes
  • -f option : Fun with #!
  • interrupted : Handling Signals to Child Processes
  • quoting in : Quoting and Command-Line Parameters
• c-w script : cx, cw, c-w: Quick File Permission Changes
• script : Quick Descriptions of What's on the Disc
• script : Quick Descriptions of What's on the Disc
• cal program : Get Calendar for Any Month or Year: cal
• • calen program versus : Calendar for 132-Column Terminals or Printers
  • printing : PostScript Calendars with pcal
• cal_today script
• • cal That Marks Today's Date
  • Quick Descriptions of What's on the Disc
• calculators
• • bc: Simple Math at the Shell Prompt
  • (see also bc program)
  • spreadsheets vs. : It's Great to Have a Spreadsheet
  • types of : bc: Simple Math at the Shell Prompt
• calen program
• • Calendar for 132-Column Terminals or Printers
  • Quick Descriptions of What's on the Disc
• calendar file, pcal using : PostScript Calendars with pcal
• calendar program : Automatic Reminders and More: calendar
• • sending one-line reminders : Send Yourself Reminder Mail
• cancel command (System V) : System V Printing Commands
• "canonicalized" input lines : How We Made It This Far (Back?)
• capability lines in termcap or terminfo files : How termcap and terminfo Describe Terminals
• capitalization : (see case sensitivity)
• CAPS LOCK, typing without : Typing in Uppercase Without CAPS LOCK
• caret : (see ^)
• carriage returns
• • How We Made It This Far (Back?)
  • (see newline character)
• case command : Handling Files Line-by-Line
• case sensitivity : Filenames
• • ispell program and : Check Spelling Interactively with ispell
  • search patterns : Faking Case-Insensitive Searches
  • vi and ex editors and : Capitalizing Every Word on a Line
• case statement
• • Automatic Setups for Different Terminals
  • Test String Values with Bourne Shell case
  • advantages : Testing Two Strings with One case Statement
  • egrep expressions built : Online Phone and Address Lists
  • errors caused by : Missing or Extra esac, ;;, fi, etc.
  • examples
  • • Test String Values with Bourne Shell case
    • Handling Command-Line Arguments with a for Loop
    • Handling Arguments with while and shift
    • Online Phone and Address Lists
    • ASCII Characters: Listing and Getting Values
  • handling command-line arguments : Handling Arguments with while and shift
  • in while loops : Handling Arguments with while and shift
  • pattern matching in : Pattern Matching in case Statements
  • test command compared to : Testing Two Strings with One case Statement
  • testing two strings using : Testing Two Strings with One case Statement
• cat command
• • Who Listens to What You Type?
  • One Argument with a cat Isn't Enough
  • Four Ways to Skin a cat
  • Page Through Compressed, RCS, Unprintable Files
  • backslash character and : Portability
  • combining files : Command Evaluation and Accidentally Overwriting Files
  • -e option
  • • Can't Access a File? Look for Spaces in the Name
    • What's in That White Space?
  • examples
  • • Testing Your Success
    • Looping Until a Command Succeeds
  • for loops combined with : Standard Input to a for Loop
  • -n option : Numbering Lines
  • -s option : crush: A cat that Skips all Blank Lines
  • starting pipelines : Using Pipes to Create a New Tool
  • -t option : What's in That White Space?
  • -v option
  • • What's in That White Space?
    • Show Non-Printing Characters with cat -v or od -c
    • Finding Out What Characters Your Terminal's Special Keys Send
• catman program, egrep versus : apropos on Systems Without apropos
• catsaway script : Quick Descriptions of What's on the Disc
• • examples : Looping Until a Command Fails
• cbreak mode
• • How We Made It This Far (Back?)
  • Reading Verrrry Long Lines from the Terminal
• cbw program : Ways of Improving the Security of crypt
• cd command
• • Automatic File Cleanup
  • Session Information in Your Terminal's Status Line
  • What Good Is a Current Directory?
  • (see also current directory)
  • - option : The Shells' pushd and popd Commands
  • aliases for : Quick cds with Aliases
  • cdpath variable and : Saving Time When You Change Directories: cdpath
  • directory initials and : cd by Directory Initials
  • in subshells : Using {list} to Group Bourne Shell Commands
• tutorial (with this tutorial) : Introduction
• tutorial formats : tutorial Formats
• :cdpath in csh : Saving Time When You Change Directories: cdpath
• CDPATH environment variable : Saving Time When You Change Directories: cdpath
• cdpath shell variable
• • Special C Shell Variables
  • Saving Time When You Change Directories: cdpath
  • as array : Using C Shell Arrays
• center script : Quick Descriptions of What's on the Disc
• centering lines, awk script : Centering Lines in a File
• cgrep script
• • Multiline Context grep Using sed
  • More grep-like Programs Written in Perl
  • Searching for Patterns Split Across Lines
  • Quick Descriptions of What's on the Disc
• cgrep.sed script : Quick Descriptions of What's on the Disc
• change command (ex) : Useful ex Commands
• change times : The Three UNIX File Times
• character codes in termcap and terminfo databases : Special Character Codes
• character sets
• • Using Metacharacters in Regular Expressions
  • Matching a Character with a Character Set
• character strings
• • grabbing : Grabbing Parts of a String
  • parsing : Grabbing Parts of a String
  • testing : Testing Two Strings with One case Statement
  • testing using expr : Testing Characters in a String with expr
• characters
• • counting : Counting Lines, Words, and Characters: wc
  • handling most : Handling Most Characters
  • nonprintable : (see special characters)
  • sending repeated to terminals : termtest: Send Repeated Characters to Terminal
  • sent by special keys : Finding Out What Characters Your Terminal's Special Keys Send
  • special : (see special characters)
• check command (SCCS) : SCCS Basics
• checksed script
• • checksed
  • Quick Descriptions of What's on the Disc
• chgrp command
• • File Access Permissions
  • Group Permissions in a Directory with the setgid Bit
  • Quick Descriptions of What's on the Disc
• child processes
• • Managing Processes: Overall Concepts
  • Handling Signals to Child Processes
  • (see also processes)
  • changes to environment of : Subshells
  • file descriptors given to : Overview: Open Files and File Descriptors
  • killing : Destroying Processes with kill
  • relationship to parent : Managing Processes: Overall Concepts
• child signal : What Are Signals?
• CHLD (child) signal : What Are Signals?
• chmod command
• • Using chmod to Change File Permission
  • Quick Descriptions of What's on the Disc
  • = operator : The Handy chmod = Operator
  • described : Writing a Simple Shell Program
  • examples : Writing a Simple Shell Program
  • -R option
  • • Using chmod to Change File Permission
    • The Handy chmod = Operator
• chmod_edit script : Quick Descriptions of What's on the Disc
• chown command
• • File Access Permissions
  • How to Change File Ownership Without chown
  • Quick Descriptions of What's on the Disc
• Christiansen, Tom : One Argument with a cat Isn't Enough
• • on C shell disadvantages : Why Not?
  • on directory stacks : Using C Shell Arrays
• chsh command : Approved Shells: Using Unapproved Login Shell
• chunksort script
• • Sorting Multiline Entries
  • Quick Descriptions of What's on the Disc
• ci command (RCS) : RCS Basics
• cleanup script
• • Automatic File Cleanup
  • Using find to Clear Out Unneeded Files
  • Quick Descriptions of What's on the Disc
• cleanup.sed script : Quick Descriptions of What's on the Disc
• clear command
• • Running Commands When You Log Out
  • Clear Your Terminal for Security, to Stop Burn-in
  • Checklist for Resetting a Messed Up Terminal
• clear screen function in terminal setup menu : Checklist for Resetting a Messed Up Terminal
• Clear script : Quick Descriptions of What's on the Disc
• clear script : Commands to Adjust Your Terminal
• clf script
• • clf, cls: "Compressed" ls Listings
  • Quick Descriptions of What's on the Disc
• clf2 script
• • clf, cls: "Compressed" ls Listings
  • Quick Descriptions of What's on the Disc
• clipboard, creating in terminal windows : Scratchpad on Your Screen
• clock in UNIX
• • How UNIX Keeps Time
  • The date Command
• close command (awk) : Alphabetical Summary of Commands
• closing
• • file descriptors : Closing FDs
  • files : n>&m: Swap Standard Output and Standard Error
• clri command : Deleting Files with the Null Name
• ClrStatus script : Quick Descriptions of What's on the Disc
• cls script
• • clf, cls: "Compressed" ls Listings
  • Quick Descriptions of What's on the Disc
• cls2 script
• • clf, cls: "Compressed" ls Listings
  • Quick Descriptions of What's on the Disc
• cmd field
• • in crontab entries : Execution Scheduling
• cmp program
• • cmp and diff
  • Quick Descriptions of What's on the Disc
• co command (RCS) : RCS Basics
• col command
• • How nroff Makes Bold and Underline; How to Remove It
  • apropos on Systems Without apropos
• colcrt command : How nroff Makes Bold and Underline; How to Remove It
• Collinson, Peter : Putting awk, sed, etc., Inside Shell Scripts
• colrm command : Cutting Columns with colrm
• • advantages : Using echo with awk, colrm, or cut
  • awk compared to : Using echo with awk, colrm, or cut
• cols script : Quick Descriptions of What's on the Disc
• columns
• • formatting : Cutting Columns or Fields with cut
  • selecting
  • • Cutting Columns or Fields with cut
    • Cutting Columns with colrm
  • straightening : Straightening Jagged Columns
  • totaling using addup : Total a Column with addup
• comm command
• • motd.diff: Show New Lines in Login Messages
  • Comparing Filenames in Two Directory Trees
  • Comparing Two Files with comm
• comma (,) in filenames : Filenames
• command
• • resetting search table : Writing a Simple Shell Program
• command characters : (see special characters)
• command command : Which One Will bash Use?
• command directories : What Environment Variables Are Good For
• command interpreters
• • Who Listens to What You Type?
  • What's a Shell, Anyway?
  • (see also shells)
• command line
• • advantages : What's Special About the UNIX Command Line
  • aliases for arguments
  • • Using More Complex Aliases
    • Shell Aliases with Command-Line Arguments
  • arguments : Output Command-Line Arguments
  • changing path on : Changing Path on the Command Line
  • deleting on : Fix a Line Faster with Line-Kill and Word-Erase
  • editing : Shell Command-Line Editing
  • editing on : The Lessons of History
  • evaluating : Command-Line Evaluation
  • filenames on : The "Filename" -
  • interpreted by shell : Who Listens to What You Type?
  • parsing : Wildcards Inside of Aliases
  • reprinting : Reprinting Your Command Line with CTRL-r
  • saving to file : Anyone Can Program the Shell
  • as shell scripts : Writing a Simple Shell Program
  • submitting for execution at a later time : The at Command
  • too-long commands : Too Many Files for the Command Line
• "command not found" error message : Common UNIX Error Messages
• command runtimes
• • averages of : Average Command Runtimes with runtime
• command substitution
• • in for loops : Handling Command-Line Arguments with a for Loop
  • nested : Nested Command Substitution
• command-line arguments
• • character limit : Common UNIX Error Messages
  • counting : With a Loop
  • finding last : Finding the Last Command-Line Argument
  • for loops
  • • With a Loop
    • Handling Command-Line Arguments with a for Loop
  • in Bourne shell scripts : Handling Command-Line Arguments in Shell Scripts
  • in Korn Shell scripts : Handling Command-Line Arguments in Shell Scripts
  • listing using expr : Matching with expr
  • parsing
  • • Standard Command-Line Parsing
    • The Bourne Shell set Command
  • quoting : Quoting and Command-Line Parameters
  • removing : With a Loop
  • saving original settings : The Bourne Shell set Command
  • setting : The Bourne Shell set Command
  • starting with - (minus) : Handling Command-Line Arguments with a for Loop
  • unsetting : How to Unset all Command-Line Parameters
• commands
• • Using Pipes to Create a New Tool
  • (see also under specific command name)
  • aliases for : Directory for Commands You Shouldn't Run
  • ampersand (&) character at the end of : Managing Processes: Overall Concepts
  • awk utility : Group Listing of awk Commands
  • background
  • • Running Commands When You Log Out
    • Automatic File Cleanup
  • banner : Big Letters: banner
  • Berkeley printing commands : Berkeley Printing Commands
  • blocked processes : The I/O Subsystem
  • built-in
  • • Faster Prompt Setting with Built-Ins
    • Which One Will bash Use?
    • fork and exec
    • Built-Ins
  • col : How nroff Makes Bold and Underline; How to Remove It
  • colcrt : How nroff Makes Bold and Underline; How to Remove It
  • combining : Combining Several Commands
  • command substitution : Command Substitution
  • custom : (see custom commands)
  • displaying running : lastcomm: What Commands Are Running and How Long Do They Take?
  • Emacs command completion : Command Completion
  • ex editor : Useful ex Commands
  • exit status : Exit Status of UNIX Processes
  • finding : findcmd: Find a Command in Your Search Path
  • fold : Fixing Margins with pr and fold
  • for adjusting terminals : Commands to Adjust Your Terminal
  • history of : (see history of command)
  • how to issue terminals : How termcap and terminfo Describe Terminals
  • in .logout file : Running Commands When You Log Out
  • multiline : Multiline Commands, Secondary Prompts
  • multiple, while loops using : while Loop with Several Loop Control Commands
  • naming : Picking a Name for a New Command
  • numeric returns : Exit Status of UNIX Processes
  • pr
  • • Quick-and-Dirty Formatting Before Printing
    • Filename Headers Above Files Without pr
  • printed in parentheses in ps output : Why ps Prints Some Commands in Parentheses
  • printing
  • • System V : System V Printing Commands
  • recalling : (see history of command)
  • redefining with aliases : Setting Aliases Automatically, Unsetting Aliases
  • repeating
  • • Repeating a Command with a foreach Loop
    • Repeating a Cycle of Commands
    • When You Get Impatient
  • RETURN key not used with : Better read Command: grabchars
  • running a series of : Running a Series of Commands on a File
  • running at login : Shell
  • running by typing a single character : Checklist for Resetting a Messed Up Terminal
  • running number of them and averaging : Average Command Runtimes with runtime
  • running on compressed files : zloop: Run a Command on Compressed Files
  • sed editor : Preprocessing troff Input with sed
  • shell interpretation of : What the Shell Does
  • storing : Setting Up vi with the .exrc File
  • with temporarily different environment : Running a Command with a Temporarily Different Environment
  • throwaway scripts for : Throwaway Scripts for Complicated Commands
  • too long for command line : Too Many Files for the Command Line
  • typing at the shell prompt : Managing Processes: Overall Concepts
  • ul : How nroff Makes Bold and Underline; How to Remove It
  • versions : Everyone Should Learn Some Shell Developing
  • writing manual pages for
  • • Make Your Own Man Pages Without Learning troff
    • Writing a Simple Man Page with the -man Macros
• commenting
• • Bourne shell scripts : Writing a Simple Shell Program
  • ease of use : Putting awk, sed, etc., Inside Shell Scripts
  • examples : Putting awk, sed, etc., Inside Shell Scripts
  • in termcap or terminfo files : How termcap and terminfo Describe Terminals
  • starting with # (pound) : The Story of : # #!
  • starting with : : The Unappreciated Bourne Shell ":" Operator
  • starting with : (colon) : The Story of : # #!
• communication parameters, changing on the fly : Making Sense Out of the Terminal Mess
• communications utilities : UNIX Networking and Communications
• comparing
• • directory trees : Comparing Two Directory Trees with dircmp
  • editing and : ex Scripts Built by diff
  • filenames : Comparing Filenames in Two Directory Trees
  • files : Renaming, Copying, or Comparing a Set of Files
  • • bdiff command : diff for Very Long Files: bdiff
    • cmp program : cmp and diff
    • comm command : Comparing Two Files with comm
    • diff command
    • • Checking Differences with diff
      • Context diffs
    • diff3 script : Comparing Three Different Versions with diff3
    • diffmk command : Show Changes in a troff File with diffmk
    • make utility for : make Isn't Just for Developers!
    • sdiff command
    • • Side-by-Side diffs: sdiff
      • Choosing Sides with sdiff
    • twin program : Comparing Files Alongside One Another
  • word counts : Counting Lines, Words, and Characters: wc
• competion, filename : Shell Command-Line Editing
• compilation process
• • Functions, Libraries, and Header Files
  • The make Program
• compiling programs : Compiling Source Code
• complete shell variable : Special C Shell Variables
• completion, filename : Filename Completion: Faster Filename Typing
• compress utility : Compressing Files to Save Space
• compressed files
• • Filename Extensions
  • Compressing Files to Save Space
  • editing : Edit Compressed Files with zvi, zex, and zed
  • in entire directory tree
  • • Save Space: tar and compress a Directory Tree
    • Compressing a Directory Tree: Fine-Tuning
  • paging through : Page Through Compressed, RCS, Unprintable Files
  • running commands on : zloop: Run a Command on Compressed Files
  • whitespace and : Save Space with Tab Characters
• compressor script : What Good Is a File's Last Access Time?
• conditional expressions : (see expressions, conditional)
• configuration files
• • for csh : Shell Setup Files Aren't Read When You Want Them to Be?
  • pathnames in : Use Absolute Pathnames in Shell Setup Files
  • shells : Shell Setup Files-Which, Where, and Why
• configure shell script : An Easy Build
• configuring terminals
• • There's a Lot to Know About Terminals
  • Checklist: Terminal Hangs When I Log In
  • Finding What Terminal Names You Can Use
• conserving disk space : (see disk space)
• CONT (continue) signal : What Are Signals?
• continue command (awk) : Alphabetical Summary of Commands
• continue signal : (see CONT (continue) signal)
• control characters : Special Character Codes
• • Emacs and : Inserting Binary Characters into Files
  • ex and vi editors and : Protecting Keys from Interpretation by ex
  • in scripts : Using a Control Character in a Script
  • storing : Cleaning script Files
• control characters, echoing in BSD : Why Some Systems Backspace over Prompts
• control echo : What About TABs?
• controlling process : Managing Processes: Overall Concepts
• controlling terminal : The Controlling Terminal
• conversion, base
• • cvtbase used for : Base Conversion Using cvtbase
  • problems : Gotchas in Base Conversion
• conversion, binary
• • bc program used for : bc: Hexadecimal or Binary Conversion
• conversion, hexadecimal
• • bc program used for : bc: Hexadecimal or Binary Conversion
• cooked mode : How We Made It This Far (Back?)
• Cooper, Michael : Querying Your Terminal Type: qterm
• COPTS declaration line
• • -I option : The make Program
• copy command (ex) : Useful ex Commands
• copying
• • directory trees : Copying Directory Trees with cp -r
  • files
  • • What's So Complicated About Copying Files?
    • What's Really in a Directory
    • Renaming, Copying, or Comparing a Set of Files
    • Safer Removing, Moving, and Copying
    • (see also moving files; renaming files)
    • to directories : Copying Files to a Directory
  • files to different directories : Shell Scripts On-the-Fly from Standard Input
  • links : Copying Directory Trees with cp -r
  • permissions : Copying Permissions with cpmod
  • text, in vi : Get Back What You Deleted with Numbered Buffers
• core dumps : Limiting File Sizes
• • made by QUIT signal : Killing Foreground Jobs
• cos command (awk) : Alphabetical Summary of Commands
• count.it script
• • Counting Lines, Words, and Characters: wc
  • Quick Descriptions of What's on the Disc
• count_types script : Quick Descriptions of What's on the Disc
• counting occurrences : Counting Occurrences; Stopping Search Wraps
• counting text elements : Counting Lines, Words, and Characters: wc
• • wordfreq script : Count How Many Times Each Word Is Used
• cp command
• • UNIX Networking and Communications
  • Quick Descriptions of What's on the Disc
  • (see also rcp command)
  • -b option : Safer Removing, Moving, and Copying
  • -i option : Safer Removing, Moving, and Copying
  • -p option : How to Change File Ownership Without chown
  • -r option : Copying Directory Trees with cp -r
• cpio command : System V Tape Archiver: cpio
• • -d option : System V Tape Archiver: cpio
  • -i option : System V Tape Archiver: cpio
  • -o option : System V Tape Archiver: cpio
  • -v option : System V Tape Archiver: cpio
• cpmod : Quick Descriptions of What's on the Disc
• cpmod utility : Copying Permissions with cpmod
• CPU contention
• • measuring : The CPU
• CPU system time : The csh time variable
• CPU time
• • Timing Programs
  • Why Is the System So Slow?
  • as percentage of elapsed time : The csh time variable
• CPU user time : The csh time variable
• cron command : Execution Scheduling
• cron daemon : Execution Scheduling
• cron jobs
• • environment of : Periodic Program Execution: The cron Facility
  • including standard input within : Including Standard Input Within a cron Entry
  • schedule : Execution Scheduling
• cron system : Execution Scheduling
• crontab command
• • Off-Peak Job Submission
  • Adding crontab Entries
  • crontab Script Makes crontab Editing Easier/Safer
• crontab command:script : Quick Descriptions of What's on the Disc
• crontab entries : Execution Scheduling
• • adding : Adding crontab Entries
  • editing : Adding crontab Entries
  • example : Execution Scheduling
  • removing : Adding crontab Entries
• crontab files
• • adding calendar information to : Automating Your Own Calendar
  • personal : Avoiding Other at and cron Jobs
• "cross-device link" error message : Common UNIX Error Messages
• crush script
• • crush: A cat that Skips all Blank Lines
  • Quick Descriptions of What's on the Disc
• Crypt Breaker's Workbench program : Ways of Improving the Security of crypt
• crypt utility : Ways of Improving the Security of crypt
• csh : (see shell)
• csh command name : Aborting Programs
• csh filename extension : Filename Extensions
• csh time variable
• • Timing Programs
  • The csh time variable
• csh_init : Quick Descriptions of What's on the Disc
• • on PowerTools disk
  • • Using C Shell Arrays
    • Which Version Am I Using?
• csh_logout : Quick Descriptions of What's on the Disc
• cshrc file
• • Shell
  • Quick Login
  • Shell Setup Files Aren't Read When You Want Them to Be?
  • Speeding Up Your C Shell with set prompt Test
  • # in : Simple Aliases
  • creating multiline prompt : dirs in Your Prompt: Better than $cwd
  • if statements in : Conditional Statements with if
  • prompt setting
  • • Basics of Setting the Prompt
    • Multiline Shell Prompts
  • setting search path : Setting Path in Shell Setup Files
  • SHLVL environment variable : Show Subshell Level with $SHLVL
  • symlinks workaround : Which Directory Am I in, Really?
• cshrc.$HOST file : cshrc.$HOST File for Per Host Setup
• CSHRC_READ variable : Gotchas in set prompt Test
• csplit program
• • Splitting Files by Context: csplit
  • Quick Descriptions of What's on the Disc
• ctags command : Keep Track of Functions and Included Files with ctags and tags
• ctime, defined : The Three UNIX File Times
• CTRL -\(to quit)
• • How We Made It This Far (Back?)
  • Aborting Programs
• CTRL key : Terminal Escape Sequences
• • specifying with stty command : Setting Your Erase, Kill, and Interrupt Characters
• CTRL-/ command : Killing Foreground Jobs
• CTRL-c command
• • For the Impatient: Type-Ahead
  • Killing Foreground Jobs
  • aborting programs : Aborting Programs
• CTRL-d command
• • Quick Login
  • Stop Accidental C Shell Logouts
  • How We Made It This Far (Back?)
  • flushing the input buffer : Reading Verrrry Long Lines from the Terminal
  • to end scripts : Copy What You Do with script
  • typing command lines in at : The at Command
• CTRL-h command : Handling Most Characters
• CTRL-j command : Checklist for Resetting a Messed Up Terminal
• CTRL-l command : Checklist: Screen Size Messed Up?
• CTRL-m character
• • When Is a File Not a File?
  • Setting Up vi with the .exrc File
• CTRL-q command : Flow Control (We Hope)
• • killing processes : Cleaning Up an Unkillable Process
  • restarting output : Output Stopped?
• CTRL-r (reprint) character : Reprinting Your Command Line with CTRL-r
• CTRL-s command : Flow Control (We Hope)
• • stopping output : Output Stopped?
• CTRL-u (line-kill) character : Fix a Line Faster with Line-Kill and Word-Erase
• CTRL-w (word-erase) character : Fix a Line Faster with Line-Kill and Word-Erase
• CTRL-x (line-kill) character : Fix a Line Faster with Line-Kill and Word-Erase
• CTRL-z command
• • Some Gotchas with Background Processing
  • Foreground and Background
  • What Are Signals?
  • putting jobs in background : Program Waiting for Input?
  • stopping a subshell : Subshells
  • used during sourcing : Built-Ins
• CTS (Clear to Send) : Flow Control (We Hope)
• cur function : Shell Functions
• curly braces : (see { })
• curly quotes : Preprocessing troff Input with sed
• current directory
• • Making Pathnames
  • Predefined Environment Variables
  • dirs in Your Prompt: Better than $cwd
  • Shell Functions
  • Which Directory Am I in, Really?
  • Managing Processes: Overall Concepts
  • advantages : What Good Is a Current Directory?
  • finding : How Does UNIX Find Your Current Directory?
• current job : The "Current Job" Isn't Always What You Expect
• custom commands
• • advantages of : Using Pipes to Create a New Tool
  • directories : Internal and External Commands
• custom shells : Customizing the Shell
• customizing
• • Emacs searching : Rational Searches
  • grep commands : Make Custom grep Commands (etc.) with perl
  • keys : (see key definitions)
• cut command
• • Cutting Columns or Fields with cut
  • Quick Descriptions of What's on the Disc
  • advantages : Using echo with awk, colrm, or cut
  • awk compared to : Using echo with awk, colrm, or cut
  • as filter in index program : Using index with a Filter
• cvtbase program
• • Base Conversion Using cvtbase
  • Quick Descriptions of What's on the Disc
• cw script : cx, cw, c-w: Quick File Permission Changes
• cwd shell variable
• • Special C Shell Variables
  • dirs in Your Prompt: Better than $cwd
  • Which Directory Am I in, Really?
• cx script : cx, cw, c-w: Quick File Permission Changes

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