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Index: U

UIDs : (see user IDs)
ul command : UNIX Power Tools, 43.18. How nroff Makes Bold and Underline; How to Remove It
ulimit
Learning the Korn Shell, 10.2.2. ulimit
Learning the Korn Shell, A.1. The Bourne Shell
UNIX in a Nutshell, Chapter 4, Reference: ulimit
Ultrix
Learning the Korn Shell, 1. Korn Shell Basics
Learning the Korn Shell, 1.3. History of UNIX Shells
Learning the Korn Shell, 1.9.5. Control Keys
umask command
Learning the Korn Shell, 10.2.1. umask
Learning the Korn Shell, A.6. Workalikes on PC Platforms
Learning the UNIX Operating System, 3.6. Customizing Your Account
UNIX Power Tools, 14.14. Automatic Setup When You Enter/Exit a Directory
UNIX Power Tools, 22.2.1. User, Group, and World
UNIX Power Tools, 22.4. Setting an Exact umask
UNIX Power Tools, 45.36. Shell Lockfile
UNIX Power Tools, 52.5.3.3. Running Install
UNIX in a Nutshell, Chapter 2, Reference: umask
UNIX in a Nutshell, Chapter 4, Reference: umask
UNIX in a Nutshell, Chapter 5, Reference: umask
(see also chmod command)
as logical XOR with file permission : Learning the Korn Shell, 10.2.1. umask
setting in shell scripts : UNIX Power Tools, 38.4. Subshells
unabbreviate command (ex) : UNIX in a Nutshell, Chapter 9, Reference: unabbreviate
unalias
Learning the Korn Shell, 3.2.1. Tracked Aliases
UNIX in a Nutshell, Chapter 4, Reference: unalias
UNIX in a Nutshell, Chapter 5, Reference: unalias
UNIX in a Nutshell, Chapter 20, Reference: unalias
uname command
UNIX Power Tools, 50.7. How UNIX Systems Remember Their Name
UNIX Power Tools, 52.4. Quick Descriptions of What's on the Disc
UNIX in a Nutshell, Chapter 2, Reference: uname
unarchiving : (see archives)
uncluttering logins : UNIX Power Tools, 2.15. Unclutter Logins: Show Login Messages Just Once
uncompress
Learning the Korn Shell, 1.8. Background Jobs
UNIX Power Tools, 52.8.1.1. Missing Programs
UNIX Power Tools, 52.8.2.2. Uncompressing the Sources
UNIX in a Nutshell, Chapter 2, Reference: uncompress
UNIX in a Nutshell, Chapter 2, Reference: zcat
undelete program : UNIX Power Tools, 52.4. Quick Descriptions of What's on the Disc
underlined text : UNIX Power Tools, 43.18. How nroff Makes Bold and Underline; How to Remove It
underscore (_) in filenames : UNIX Power Tools, 1.15. Filenames
undisplay command (dbx) : UNIX in a Nutshell, Chapter 20, Reference: undisplay
undo command (ex) : UNIX in a Nutshell, Chapter 9, Reference: undo
undoing
emacs : UNIX in a Nutshell, 7.2.5. Stopping and Undoing Commands
vi
Learning the vi Editor, 2.3.5.4. Problems with Deletions
Learning the vi Editor, 2.3.8. Repeating or Undoing Your Last Command
Learning the vi Editor, 2.3.8.2. Undo
Learning the vi Editor, 6.1. Confirming Substitutions
UNIX Power Tools, 30.8. Get Back What You Deleted with Numbered Buffers
UNIX Power Tools, 30.10. Confirming Substitutions in ex and vi
UNIX Power Tools, 30.38. Finding Your Place with Undo
unedit command (SCCS)
UNIX Power Tools, 20.13. SCCS Basics
UNIX in a Nutshell, 17.6.2. Pseudo-commands
unexpand command
UNIX Power Tools, 41.4.1. TAB Is Just Another Character to UNIX
UNIX Power Tools, 52.4. Quick Descriptions of What's on the Disc
filtering within vi : UNIX Power Tools, 31.5. Keymaps for Pasting into a Window Running vi
unexpand script : UNIX Power Tools, 24.6. Save Space with Tab Characters
unget command (SCCS) : UNIX in a Nutshell, Chapter 17, Reference: unget
unhash command (csh) : UNIX in a Nutshell, Chapter 5, Reference: unhash
union metacharacter, lack of : sed & awk, 3.2.9. Alternative Operations
union of regular expressions
sed & awk, 3.2. A Line-Up of Characters
sed & awk, 3.2.9. Alternative Operations
uniq command
UNIX Power Tools, 35.20. Quick Reference: uniq
UNIX Power Tools, 50.3. apropos on Systems Without apropos
UNIX in a Nutshell, Chapter 2, Reference: uniq
units command : UNIX in a Nutshell, Chapter 2, Reference: units
units of measurements (nroff/troff) : UNIX in a Nutshell, 12.3.2. Specifying Measurements
UNIX
accessing other platforms : Learning the UNIX Operating System, 4.4.6. Files on Other Operating Systems
advantages
UNIX Power Tools, 1.1. What's Special About UNIX?
UNIX Power Tools, 1.7. Power Grows on You
UNIX Power Tools, 1.26. What a Multiuser System Can Do for You
UNIX Power Tools, 44.1. Everyone Should Learn Some Shell Programming
UNIX Power Tools, 52.3. Shrink-Wrapped Software for UNIX
binary programs : UNIX Power Tools, 52.8.2. Compiling Source Code
bundling software packages : UNIX in a Nutshell, 1.2. Bundling
command reference : Learning the UNIX Operating System, B.1. Commands and Their Meanings
Command Syntax Standard Rules : Learning the Korn Shell, 6.1.3. getopts
definition of priority : UNIX Power Tools, 39.9. Know When to Be "nice" to OTher Users...and When
documentation
Learning the Korn Shell, 4.3.1. Syntax of String Operators
Learning the UNIX Operating System, 7.1. Standard UNIX Documentation
drawbacks of : UNIX Power Tools, 1.34. What's Wrong with UNIX
environment : Learning the UNIX Operating System, 1.1. Working in the UNIX Environment
filenames in BSD : Learning the Korn Shell, 7.2.2.3. Code blocks
filenames in System V
Learning the Korn Shell, 6.3.3. String Formatting Options
Learning the Korn Shell, 7.2.2.3. Code blocks
flexible handling of TAB characters : UNIX Power Tools, 41.4. How UNIX Handles TAB Characters
identifying versions : UNIX Power Tools, 50.8. Which Version Am I Using?
interprocess communication in : Learning the Korn Shell, 8.3. Signals
networking and communications utilities : UNIX Power Tools, 1.33. UNIX Networking and Communications
platforms : UNIX Power Tools, 52.3. Shrink-Wrapped Software for UNIX
Programmer's Manual
Learning the Korn Shell, 8. Process Handling
Learning the Korn Shell, 8.3.3.2. BSD
references for : Learning the UNIX Operating System, A.1. General UNIX Books
security : (see security)
shells : (see shells)
shell history : Learning the Korn Shell, 1.3. History of UNIX Shells
starting X from : Learning the UNIX Operating System, 2.2.2. B. Starting X from a Standard UNIX Session
terminal interface
Learning the Korn Shell, 2. Command-line Editing
Learning the Korn Shell, 2.3.4. Moving Around in the History File
Learning the Korn Shell, 2.3.6. Miscellaneous Commands
Learning the Korn Shell, 2.4. Vi Editing Mode
time on : UNIX Power Tools, 39.1. Which Time Is It?
two main branches of : UNIX Power Tools, 41.2.1. How We Made It This Far (Back?)
utilities : Learning the Korn Shell, 1.7.1. Standard I/O
versions
Learning the UNIX Operating System, Versions of UNIX
UNIX Power Tools, About UNIX Versions
UNIX in a Nutshell, 1.1. Merging the Traditions
A/UX
Learning the Korn Shell, 1. Korn Shell Basics
Learning the Korn Shell, 1.9.5. Control Keys
AIX
Learning the Korn Shell, 1. Korn Shell Basics
Learning the Korn Shell, 8.3.3. ps
BSD
Learning the Korn Shell, 1.3. History of UNIX Shells
Learning the Korn Shell, 1.9.5. Control Keys
Learning the Korn Shell, 2.3.4. Moving Around in the History File
Learning the Korn Shell, 2.3.6. Miscellaneous Commands
Learning the Korn Shell, 2.4. Vi Editing Mode
Learning the Korn Shell, 3.4. Shell Variables
Learning the Korn Shell, 3.4.2.2. Mail Variables
Learning the Korn Shell, 4.4. Command Substitution
Learning the Korn Shell, 7.2.2.3. Code blocks
Learning the Korn Shell, 8.3. Signals
Learning the Korn Shell, 8.3.3. ps
Learning the Korn Shell, 8.3.3.2. BSD
Learning the Korn Shell, 9.2.3.3. Breakpoints
Learning the Korn Shell, A.2. The IEEE 1003.2 POSIX Shell Standard
Learning the Korn Shell, A.4. pdksh
HP/UX
Learning the Korn Shell, 1. Korn Shell Basics
Learning the Korn Shell, 1.9.5. Control Keys
Learning the Korn Shell, 8.3.3. ps
SCO : Learning the Korn Shell, 1.9.5. Control Keys
SunOS
Learning the Korn Shell, 1. Korn Shell Basics
Learning the Korn Shell, 1.3. History of UNIX Shells
Learning the Korn Shell, 1.9.5. Control Keys
Learning the Korn Shell, 4.4. Command Substitution
Learning the Korn Shell, 8.3.3. ps
Learning the Korn Shell, A.1. The Bourne Shell
Learning the Korn Shell, A.3. wksh
Learning the Korn Shell, A.4. pdksh
System III
Learning the Korn Shell, 1.9.5. Control Keys
Learning the Korn Shell, 8.2. Job Control
System V
Learning the Korn Shell, 1.9.5. Control Keys
Learning the Korn Shell, 3.4. Shell Variables
Learning the Korn Shell, 3.4.2.4. Terminal Types
Learning the Korn Shell, 6.3.3. String Formatting Options
Learning the Korn Shell, 7.2.2.3. Code blocks
Learning the Korn Shell, 8.2. Job Control
Learning the Korn Shell, 8.3. Signals
Learning the Korn Shell, 8.3.3. ps
Learning the Korn Shell, 9.2.3.3. Breakpoints
Learning the Korn Shell, A.2. The IEEE 1003.2 POSIX Shell Standard
System V Release 4
Learning the Korn Shell, Korn Shell Versions
Learning the Korn Shell, 1.3.1. The Korn Shell
Learning the Korn Shell, 1.4. Getting the Korn Shell
Learning the Korn Shell, 6.1.3.1. More About C Compilers
Learning the Korn Shell, A.3. wksh
that don't support job control : Learning the Korn Shell, 8.2. Job Control
Ultrix
Learning the Korn Shell, 1. Korn Shell Basics
Learning the Korn Shell, 1.3. History of UNIX Shells
Learning the Korn Shell, 1.9.5. Control Keys
Learning the Korn Shell, 8.3.3. ps
UTS : Learning the Korn Shell, 1. Korn Shell Basics
Version 6 : Learning the Korn Shell, 4.3.2. Patterns and Regular Expressions
Version 7
Learning the Korn Shell, 1.3. History of UNIX Shells
Learning the Korn Shell, A.1. The Bourne Shell
Learning the Korn Shell, A.2. The IEEE 1003.2 POSIX Shell Standard
Learning the Korn Shell, A.4. pdksh
Xenix
Learning the Korn Shell, 1. Korn Shell Basics
Learning the Korn Shell, 1.9.5. Control Keys
Learning the Korn Shell, 8.2. Job Control
workalikes : Learning the Korn Shell, A.6. Workalikes on PC Platforms
xterm windows : (see xterm windows)
UNIX commands : Learning the Korn Shell, C.4. UUCP
compare files (diff) : Learning the vi Editor, 7.4.5. ex Scripts Built by diff
execute from vi : Learning the vi Editor, 7.2. Executing UNIX Commands
filter text through : Learning the vi Editor, 7.2.1. Filtering Text Through a Command
UNIX System Laboratories (USL)
Learning the Korn Shell, 1.3.1. The Korn Shell
Learning the Korn Shell, A.3. wksh
Learning the Korn Shell, A.7. The Future of the Korn Shell
address and phone number : Learning the Korn Shell, A.3. wksh
unkillable processes, cleaning up : UNIX Power Tools, 38.15. Cleaning Up an Unkillable Process
unlimit command (csh) : UNIX in a Nutshell, Chapter 5, Reference: unlimit
unlimit coredumpsize command : UNIX Power Tools, 24.5. Limiting File Sizes
unlink command : UNIX Power Tools, 23.15. Using unlink to Remove a File with a Strange Name
unlinking files : UNIX Power Tools, 24.3. Unlinking Open Files Isn't a Good Idea
unmap command (ex) : UNIX in a Nutshell, Chapter 9, Reference: unmap
unpack command
UNIX in a Nutshell, Chapter 2, Reference: unpack
(see also pack command; pcat command)
unprintable characters : (see special characters)
unprintable files : UNIX Power Tools, 25.5. Page Through Compressed, RCS, Unprintable Files
unset
UNIX in a Nutshell, Chapter 4, Reference: unset
UNIX in a Nutshell, Chapter 5, Reference: unset
UNIX in a Nutshell, Chapter 20, Reference: unset
in POSIX shell : Learning the Korn Shell, A.2. The IEEE 1003.2 POSIX Shell Standard
unset variable errors : UNIX Power Tools, 40.4. Choosing the Shell Run (We Hope) by at
unsetenv command
UNIX Power Tools, 6.1. What Environment Variables Are Good For
UNIX in a Nutshell, Chapter 5, Reference: unsetenv
unshar program
UNIX Power Tools, 19.3. unshar: Unarchive a Shell Archive
UNIX Power Tools, 52.4. Quick Descriptions of What's on the Disc
UNIX Power Tools, 52.8.1.1. Missing Programs
UNIX Power Tools, 52.8.2.4. Unsharring the Sources
unshar software : UNIX Power Tools, 52.8.2.4. Unsharring the Sources
untarring software : UNIX Power Tools, 52.8.2.3. Untarring the Sources
unterrupt characters : UNIX Power Tools, 5.9. Setting Your Erase, Kill, and Interrupt Characters
until
Learning the Korn Shell, 5.4. select
Learning the Korn Shell, 5.5. while and until
UNIX Power Tools, 44.10.1. Looping Until a Command Succeeds
UNIX in a Nutshell, Chapter 4, Reference: until
in Bourne shells : UNIX Power Tools, 44.10.1. Looping Until a Command Succeeds
differences with while : Learning the Korn Shell, 5.5. while and until
examples : UNIX Power Tools, 44.10.1. Looping Until a Command Succeeds
redirecting I/O to : Learning the Korn Shell, 7.2.2.2. I/O Redirection and multiple commands
syntax : Learning the Korn Shell, 5.5. while and until
while loops compared to : UNIX Power Tools, 44.10.2. Looping Until a Command Fails
up command (dbx) : UNIX in a Nutshell, Chapter 20, Reference: up
updateb script : UNIX Power Tools, 17.19. Finding Files (Much) Faster with a find Database
uppercase : (see case)
uptime command
UNIX Power Tools, 39.7. Checking System Load: uptime
UNIX in a Nutshell, Chapter 2, Reference: uptime
average reported by : UNIX Power Tools, 39.12.1. The CPU
usage information
UNIX in a Nutshell, Chapter 2, Reference: time
UNIX in a Nutshell, Chapter 2, Reference: timex
UNIX in a Nutshell, Chapter 2, Reference: w
use command (dbx) : UNIX in a Nutshell, Chapter 20, Reference: use
USENET : UNIX Power Tools, 1.33. UNIX Networking and Communications
comp.binaries.os2 newsgroup : Learning the Korn Shell, A.6. Workalikes on PC Platforms
comp.sources.unix newsgroup : Learning the Korn Shell, A.4. pdksh
$USER, examples : UNIX Power Tools, 48.4.3. Automating Your Own Calendar
user dictionaries : (see dictionary files)
USER environment variable
UNIX Power Tools, 6.3. Predefined Environment Variables
UNIX Power Tools, 6.9. Special C Shell Variables
UNIX in a Nutshell, 5.3.5. Environment Variables
in C shell : UNIX Power Tools, 47.2.5. Variable Syntax
user IDs (UIDs) : UNIX Power Tools, 38.3. Managing Processes: Overall Concepts
file access : UNIX Power Tools, 1.23. File Access Permissions
user shell variable : UNIX in a Nutshell, 5.3.3. Predefined Shell Variables
user time
UNIX Power Tools, 39.2. Timing Programs
UNIX Power Tools, 39.5. Why Is the System So Slow?
user's login shell, killing : UNIX Power Tools, 38.10. Destroying Processes with kill
user-controlled multitasking : Learning the Korn Shell, 8. Process Handling
user-defined functions : sed & awk, 9.3. Writing Your Own Functions
user-defined signals : (see USR1 signal)
user-state CPU time : UNIX Power Tools, 39.5. Why Is the System So Slow?
username field in crontab entries : UNIX Power Tools, 40.12.1. Execution Scheduling
usernames
mailing to : Learning the UNIX Operating System, 3.4.1. Sending Mail
printing : UNIX in a Nutshell, Chapter 2, Reference: whoami
users
UNIX Power Tools, 17.16. Searching by Owner and Group
(see also groups)
classes of : UNIX Power Tools, 39.12.4. User Communities
displaying data about : UNIX in a Nutshell, Chapter 2, Reference: finger
effect on system performance : UNIX Power Tools, 39.12.4. User Communities
groups : (see groups)
IDs, displaying : UNIX in a Nutshell, Chapter 2, Reference: id
logged-in
displaying list
UNIX in a Nutshell, Chapter 2, Reference: users
UNIX in a Nutshell, Chapter 2, Reference: who
displaying system usage : UNIX in a Nutshell, Chapter 2, Reference: ruptime
information on logged in
UNIX in a Nutshell, Chapter 2, Reference: rwho
UNIX in a Nutshell, Chapter 2, Reference: w
ownership : (see ownership, file)
permissions : (see permissions)
sending email messages to all : UNIX in a Nutshell, Chapter 2, Reference: wall
SUID bit
UNIX Power Tools, 1.23. File Access Permissions
UNIX Power Tools, 1.25. Access to Directories
terminating processes of : UNIX in a Nutshell, Chapter 2, Reference: shutdown
who command for : (see who command)
users command : UNIX in a Nutshell, Chapter 2, Reference: users
/usr directory
/usr/bin directory
Learning the Korn Shell, 3.4.2.5. Command Search Path
Learning the Korn Shell, 10.3.2. A System Break-in Scenario
UNIX Power Tools, 1.10. Internal and External Commands
UNIX Power Tools, 44.3.4. Shell Search Paths
/usr/include, header files in : UNIX Power Tools, 52.8.2.7. Functions, Libraries, and Header Files
/usr/lib : Learning the Korn Shell, 9.2.1.1. The driver script
/usr/lib/crontab file : UNIX Power Tools, 40.12.1. Execution Scheduling
/usr/lib/crontab.local file : UNIX Power Tools, 40.12.1. Execution Scheduling
/usr/local directory : UNIX Power Tools, 52.5.3.5. Installing Everything Using the Defaults
/usr/tmp directory
Learning the Korn Shell, 8.4.2. Process ID Variables and Temporary Files
UNIX Power Tools, 21.4. Why Both /tmp and /usr/tmp?
USR1 (user-defined) signal : UNIX Power Tools, 38.8. What Are Signals?
utilities, combining : UNIX Power Tools, 44.1. Everyone Should Learn Some Shell Programming
UTS : Learning the Korn Shell, 1. Korn Shell Basics
UUCP (UNIX-to-UNIX copy)
Learning the Korn Shell, 7.1.1. Here-documents
Learning the Korn Shell, A.6. Workalikes on PC Platforms
UNIX Power Tools, 1.33. UNIX Networking and Communications
UNIX Power Tools, 52.7.2.3. UUCP
sed & awk, UUCP
uucp command
Learning the Korn Shell, C.4. UUCP
UNIX in a Nutshell, Chapter 2, Reference: uucp
(see also uustat command)
uudecode command
UNIX Power Tools, 19.5. Using tar to Create and Unpack Archives
UNIX in a Nutshell, Chapter 2, Reference: uudecode
uuencode command
UNIX Power Tools, 19.5. Using tar to Create and Unpack Archives
UNIX Power Tools, 11.3. My Favorite Is !$
UNIX in a Nutshell, Chapter 2, Reference: uudecode
UNIX in a Nutshell, Chapter 2, Reference: uuencode
uuglist command : UNIX in a Nutshell, Chapter 2, Reference: uuglist
uulog command
UNIX in a Nutshell, Chapter 2, Reference: uulog
(see also tail command)
uuname command
UNIX in a Nutshell, Chapter 2, Reference: uuname
(see also uucp command)
UUNET : UNIX Power Tools, 52.7.2.3. UUCP
uupick command
UNIX in a Nutshell, Chapter 2, Reference: uupick
(see also uuto command)
uustat command
UNIX in a Nutshell, Chapter 2, Reference: uustat
(see also uucp command)
uuto command
UNIX in a Nutshell, Chapter 2, Reference: uuto
(see also uupick command)
uutot.awk script (example) : sed & awk, 13.1. uutot.awk - Report UUCP Statistics
uux command : UNIX in a Nutshell, Chapter 2, Reference: uux


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