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# Index: R

rand command (awk) : 33.11.7. Alphabetical Summary of Commands
random number generator
  in Bourne shells : 45.11. The Multipurpose jot Command
  in C shells : 45.11. The Multipurpose jot Command
  jot used for : 45.11. The Multipurpose jot Command
raw mode : 41.2.1. How We Made It This Far (Back?)
rcp command : 1.33. UNIX Networking and Communications
  -r option : 18.15. Copying Directory Trees with cp -r
RCS (Revision Control System)
  20.12. Protecting Files with SCCS or RCS
  20.14. RCS Basics
  52.4. Quick Descriptions of What's on the Disc
  paging through RCS files : 25.5. Page Through Compressed, RCS, Unprintable Files
  searching files : 27.10. Search RCS Files with rcsgrep
rcsegrep.fast script : 52.4. Quick Descriptions of What's on the Disc
rcsgrep script
  27.10. Search RCS Files with rcsgrep
  52.4. Quick Descriptions of What's on the Disc
rcsless script : 52.4. Quick Descriptions of What's on the Disc
rcsmore script : 52.4. Quick Descriptions of What's on the Disc
rcspg script : 52.4. Quick Descriptions of What's on the Disc
rcsrevs script
  20.15. List RCS Revision Numbers with rcsrevs
  52.4. Quick Descriptions of What's on the Disc
RD (Receive Data) light : 42.2.4. Stalled Data Connection?
read( ) : 20.6. Writing a Tape Drive on a Remote Machine
read command
  9.12. The Bourne Shell for Loop
  44.13. read: Reading from the Keyboard
  examples : 44.13. read: Reading from the Keyboard
  while loops using
    45.16. Standard Input to a for Loop
    45.22. Handling Files Line-by-Line
read command (ex) : 33.4. Useful ex Commands
read permission
  22.2. Tutorial on File and Directory Permissions
  22.19. Shell Scripts Must be Readable and (Usually) Executable
  execute permission without : 22.12. A Directory that People Can Access but Can't List
read-only files : 22.9. Protect Important Files: Make Them Unwritable
read.base program : 48.10. Working with Names and Addresses
README files : 52.8.2.6. An Easy Build
Ready-to-Run Software
  52.5.5. What to Do if You Have Problems
  52.7.1. Alternative Media
  52.8.2.1. Copying the Sources
  contacting : 52.9. Software Support from RTR
  software support : 52.9. Software Support from RTR
  technical support : 52.8.1.2. Problems
real memory, maximum amount of : 39.3. The csh time variable
real-time priorities : 39.9. Know When to Be "nice" to OTher Users...and When
real-time submission : 39.9.3. System V C Shell nice
recomment script
  35.4. recomment: Clean Up Program Comment Blocks
  52.4. Quick Descriptions of What's on the Disc
recovering files : 30.24. vi/ex File Recovery vs. Networked Filesystems
recursive aliases : 10.6. Avoiding C Shell Alias Loops
redirecting
  csh and : 13.5. Redirection in C Shell: Capture Errors, Too?
  file descriptors : 45.21. n>&m: Swap Standard Output and Standard Error
  I/O loops : 45.22. Handling Files Line-by-Line
  loops : 45.23. The Ins and Outs of Redirected I/O Loops
  noclobber variable : 6.9. Special C Shell Variables
  standard error
    45.20. Overview: Open Files and File Descriptors
    45.21. n>&m: Swap Standard Output and Standard Error
    47.2.1.1. Writing Files
  standard input
    1.30. Redirecting Input and Output
    13.1. Using Standard Input and Output
    45.20. Overview: Open Files and File Descriptors
    47.2.1.2. Reading Files
  standard output
    1.30. Redirecting Input and Output
    13.1. Using Standard Input and Output
    45.20. Overview: Open Files and File Descriptors
    45.21. n>&m: Swap Standard Output and Standard Error
  tee program : 13.9. Send Output Two or More Places with tee
  while loops : 45.22. Handling Files Line-by-Line
redirecting input/output
  tpipe command for : 13.11. tpipe-Redirecting stdout to More than One Place
redo script
  11.14.1. In the C Shell: redo
  52.4. Quick Descriptions of What's on the Disc
redraw screen command : 42.5. Checklist: Screen Size Messed Up?
regular expressions
  21.14. Automatically Appending the Date to a Filename
  26.1. That's an Expression
  26.3. Understanding Expressions
  (see also pattern matching)
  extended : 26.4.11. Extended Regular Expressions
  metacharacters
    for different UNIX programs : 26.9. Valid Metacharacters for Different UNIX Programs
    examples of : 26.8. I Never Meta Character I Didn't Like
  metacharacters in
    8.19. "Special" Characters and Operators
    26.4. Using Metacharacters in Regular Expressions
    26.10. Pattern Matching Quick Reference with Examples
  pattern context : 26.5. Getting Regular Expressions Right
  pattern matching quick reference : 26.10. Pattern Matching Quick Reference with Examples
  testing : 26.6. Just What Does a Regular Expression Match?
  wildcards versus : 26.2. Don't Confuse Regular Expressions with Wildcards
rehash command : 4.2. A bin Directory for Your Programs and Scripts
  examples : 44.2. Writing a Simple Shell Program
relational operators : (see operators, relational))
relative pathnames
  1.21. Making Pathnames
  2.6. Use Absolute Pathnames in Shell Setup Files
  14.2. Using Relative and Absolute Pathnames
  14.3. What Good Is a Current Directory?
  18.6. Stale Symbolic Links
  in angle brackets : 52.8.2.7. Functions, Libraries, and Header Files
relink script
  18.14. Relinking Multiple Symbolic Links
  52.4. Quick Descriptions of What's on the Disc
reminder mail, sending : 40.11. Send Yourself Reminder Mail
remote
  directories : 5.6. Checklist: Terminal Hangs When I Log In
  echo : 41.2.1. How We Made It This Far (Back?)
  restoration from backups : 20.4.2. Remote Restoring
  tape drives
    20.5. Using tar to a Remote Tape Drive
    20.6. Writing a Tape Drive on a Remote Machine
removing
  command-line arguments : 44.15.2. With a Loop
  open files : 45.10. Removing a File Once It's Opened - for Security and Easy Cleanup
  self-removing scripts
    45.4. Fun with #!
    45.10. Removing a File Once It's Opened - for Security and Easy Cleanup
removing files : (see deleting files)
ren command : 52.4. Quick Descriptions of What's on the Disc
ren script : 18.11. Renaming Files with ren
rename script
  18.10. There's More than One Way to Do It
  52.4. Quick Descriptions of What's on the Disc
renaming files
  18.2. What's Really in a Directory
  18.9. Renaming, Copying, or Comparing a Set of Files
  (see also copying files; moving files)
  interactively : 18.12. Renaming a List of Files Interactively
renice command
  12.5. System Overloaded? Try Stopping Some Jobs
  39.9. Know When to Be "nice" to OTher Users...and When
  39.11. Changing a Job's Priority Under BSD UNIX
rep command vs. vis command : 51.7. When You Get Impatient
repeat command : 9.25. The C Shell repeat Command
repeating commands : 11.8. Repeating a Cycle of Commands
report, summarizing execution statistics : 38.5. The ps Command
reset command : 5.11. Initializing the Terminal with tset
resetting terminals : 42.4. Checklist for Resetting a Messed Up Terminal
resident text pages, average kilobytes of : 39.3. The csh time variable
resize (xterm) command : 42.5. Checklist: Screen Size Messed Up?
resources
  contention issues : 39.12. What Makes Your Computer Slow? How Do You Fix It?
  overloaded : 12.5. System Overloaded? Try Stopping Some Jobs
restart command (lpc) : 43.3. Printer Control with lpc
restarting at jobs automatically : 40.8. Automatically Restarting at Jobs
RETURN characters : (see newline characters)
return command (awk) : 33.11.7. Alphabetical Summary of Commands
RETURN key, not needed with commands : 45.32. A Better read Command: grabchars
revision control programs
  file versions and : 1.15. Filenames
Revision Control System : (see RCS)
revision marks : (see execute permissions)
.rhosts file : 20.5. Using tar to a Remote Tape Drive
right angle bracket : (see >)
rlogin utility
  1.33. UNIX Networking and Communications
  2.4. Tip for Changing Account Setup: Keep a Shell Ready
  2.12. Automatic Setups for Different Terminals
  stalled connection with : 42.2.4. Stalled Data Connection?
rm command
  23.2. rm and Its Dangers
  52.4. Quick Descriptions of What's on the Disc
  -b option : 21.11. Safer Removing, Moving, and Copying
  -f option
    23.10. Deletion with Prejudice: rm -f
    44.12. Trapping Exits Caused by Interrupts
  -i option
    21.11. Safer Removing, Moving, and Copying
    23.4. Answer "Yes" or "No" Forever with yes
    23.5. Remove Some, Leave Some
    23.7. Safer File Deletion in Some Directories
rmdir command
  23.17. Problems Deleting Directories
  52.4. Quick Descriptions of What's on the Disc
root directory
  1.19. The Tree Structure of the Filesystem
  1.21. Making Pathnames
  installation process and : 52.8.2.6. An Easy Build
root user
  password for
    1.23. File Access Permissions
    1.24. The Superuser (Root)
  su command and : (see su command)
rot program
  35.23. Rotating Text
  52.4. Quick Descriptions of What's on the Disc
rotating text : 30.22.2. Filtering Text with vi
rprnt character : 9.3. Reprinting Your Command Line with CTRL-r
rprnt key : 5.9. Setting Your Erase, Kill, and Interrupt Characters
rsh utility
  1.33. UNIX Networking and Communications
  20.6. Writing a Tape Drive on a Remote Machine
  restoring from remote tape drives : 20.5. Using tar to a Remote Tape Drive
rtrpatch.pcal file : 52.8.2.5. Applying Patches
RTS (Request to Send) : 41.2.4. Flow Control (We Hope)
RTS/CTS flow control : 41.2.4. Flow Control (We Hope)
runsed script
  4.3. Organizing Nonexecutable Scripts
  34.3.2. runsed
  52.4. Quick Descriptions of What's on the Disc
runtime script
  39.4. Average Command Runtimes with runtime
  52.4. Quick Descriptions of What's on the Disc

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