 
Symbols
| A
| B
| C
| D
| E
| F
| G
| H
| I
| J
| K
| L
| M
| N
| O
| P
| Q
| R
| S
| T
| U
| V
| W
| X
| Y
| Z
Index: U
- UIDs
: (see user IDs)
- ul command
: 43.18. How nroff Makes Bold and Underline; How to Remove It
- ulimit -f command
: 24.5. Limiting File Sizes 
- umask command
- 
  - 14.14. Automatic Setup When You Enter/Exit a Directory 
  - 22.2.1. User, Group, and World 
  - 22.4. Setting an Exact umask 
  - 45.36. Shell Lockfile 
  - setting in shell scripts
: 38.4. Subshells 
 
- umask value
: 52.5.3.3. Running Install 
- uname command
- 
  - 50.7. How UNIX Systems Remember Their Name 
  - 52.4. Quick Descriptions of What's on the Disc 
 
- unarchiving
: (see archives)
- uncluttering logins
: 2.15. Unclutter Logins: Show Login Messages Just Once 
- uncompress command
- 
  - 52.8.1.1. Missing Programs 
  - 52.8.2.2. Uncompressing the Sources 
 
- undelete program
: 52.4. Quick Descriptions of What's on the Disc 
- underlined text
: 43.18. How nroff Makes Bold and Underline; How to Remove It
- underscore (_) in filenames
: 1.15. Filenames 
- undoing (vi editor)
- 
  - 30.8. Get Back What You Deleted with Numbered Buffers
  - 30.10. Confirming Substitutions in ex and vi
  - 30.38. Finding Your Place with Undo 
 
- unedit command (SCCS)
: 20.13. SCCS Basics 
- unexpand command
- 
  - 41.4.1. TAB Is Just Another Character to UNIX 
  - 52.4. Quick Descriptions of What's on the Disc 
  - filtering within vi
: 31.5. Keymaps for Pasting into a Window Running vi 
 
- unexpand script
: 24.6. Save Space with Tab Characters 
- uniq command
- 
  - 35.20. Quick Reference: uniq 
  - 50.3. apropos on Systems Without apropos 
 
- UNIX
- 
  - advantages
  
- 
    - 1.1. What's Special About UNIX? 
    - 1.7. Power Grows on You 
    - 1.26. What a Multiuser System Can Do for You 
    - 44.1. Everyone Should Learn Some Shell Programming 
    - 52.3. Shrink-Wrapped Software for UNIX 
  
 
- binary programs
: 52.8.2. Compiling Source Code 
  - definition of priority
: 39.9. Know When to Be "nice" to OTher Users...and When
  - drawbacks of
: 1.34. What's Wrong with UNIX 
  - flexible handling of TAB characters
: 41.4. How UNIX Handles TAB Characters 
  - identifying versions
: 50.8. Which Version Am I Using? 
  - networking and communications utilities
: 1.33. UNIX Networking and Communications 
  - platforms
: 52.3. Shrink-Wrapped Software for UNIX 
  - time on
: 39.1. Which Time Is It? 
  - two main branches of
: 41.2.1. How We Made It This Far (Back?) 
  - versions of
: About UNIX Versions 
 
- unkillable processes, cleaning up
: 38.15. Cleaning Up an Unkillable Process 
- unlimit coredumpsize command
: 24.5. Limiting File Sizes 
- unlink command
: 23.15. Using unlink to Remove a File with a Strange Name 
- unlinking files
: 24.3. Unlinking Open Files Isn't a Good Idea 
- unprintable characters
: (see special characters)
- 
  - codes for writing
: 41.11.1. Special Character Codes 
 
- unprintable files
: 25.5. Page Through Compressed, RCS, Unprintable Files 
- unset variable errors
: 40.4. Choosing the Shell Run (We Hope) by at 
- unsetenv command
: 6.1. What Environment Variables Are Good For 
- unshar program
- 
  - 19.3. unshar: Unarchive a Shell Archive 
  - 52.4. Quick Descriptions of What's on the Disc 
  - 52.8.1.1. Missing Programs 
  - 52.8.2.4. Unsharring the Sources 
 
- unshar software
: 52.8.2.4. Unsharring the Sources 
- untarring software
: 52.8.2.3. Untarring the Sources 
- unterrupt characters
: 5.9. Setting Your Erase, Kill, and Interrupt Characters 
- until loops
: 44.10.1. Looping Until a Command Succeeds 
- 
  - in Bourne shells
: 44.10.1. Looping Until a Command Succeeds 
  - examples
: 44.10.1. Looping Until a Command Succeeds 
  - while loops compared to
: 44.10.2. Looping Until a Command Fails 
 
- updateb script
: 17.19. Finding Files (Much) Faster with a find Database 
- uppercase
- 
  - pathname in
: 52.5.3.4. Installing a Single Program 
  - without CAPS LOCK
: 31.11. Typing in Uppercase Without CAPS LOCK 
 
- uptime command
: 39.7. Checking System Load: uptime 
- 
  - average reported by
: 39.12.1. The CPU 
 
- Usenet
: 1.33. UNIX Networking and Communications 
- $USER
- 
  - examples
: 48.4.3. Automating Your Own Calendar 
 
- user dictionaries
: (see dictionary files)
- USER environment variable
- 
  - 6.3. Predefined Environment Variables 
  - 6.9. Special C Shell Variables 
  - in C shell
: 47.2.5. Variable Syntax 
 
- user IDs (UIDs)
: 38.3. Managing Processes: Overall Concepts 
- 
  - file access
: 1.23. File Access Permissions 
 
- user time
- 
  - 39.2. Timing Programs 
  - 39.5. Why Is the System So Slow? 
 
- user's login shell, killing
: 38.10. Destroying Processes with kill 
- user-defined signal
: (see USR1 signal)
- user-state CPU time
: 39.5. Why Is the System So Slow? 
- username field in crontab entries
: 40.12.1. Execution Scheduling 
- users
- 
  - 17.16. Searching by Owner and Group 
  - (see also groups)
  - classes of
: 39.12.4. User Communities 
  - effect on system performance
: 39.12.4. User Communities 
  - ownership
: (see ownership, file)
  - SUID bit
  
- 
    - 1.23. File Access Permissions 
    - 1.25. Access to Directories 
  
 
 
- /usr directory
- 
  - /usr/bin directory
  
- 
    - programs in
: 1.10. Internal and External Commands 
    - in search paths
: 44.3.4. Shell Search Paths 
  
 
- /usr/include, header files in
: 52.8.2.7. Functions, Libraries, and Header Files 
  - /usr/lib/crontab file
: 40.12.1. Execution Scheduling 
  - /usr/lib/crontab.local file
: 40.12.1. Execution Scheduling 
  - /usr/local directory
: 52.5.3.5. Installing Everything Using the Defaults 
  - /usr/tmp directory
: 21.4. Why Both /tmp and /usr/tmp? 
 
- USR1 (user-defined) signal
: 38.8. What Are Signals? 
- utilities, combining
: 44.1. Everyone Should Learn Some Shell Programming 
- UUCP (UNIX-to-UNIX copy)
- 
  - 1.33. UNIX Networking and Communications 
  - 52.7.2.3. UUCP
 
- uudecode command
: 19.5. Using tar to Create and Unpack Archives 
- uuencode command
: 19.5. Using tar to Create and Unpack Archives 
- uuencoded files
: 11.3. My Favorite Is !$ 
- UUNET
: 52.7.2.3. UUCP
Symbols
| A
| B
| C
| D
| E
| F
| G
| H
| I
| J
| K
| L
| M
| N
| O
| P
| Q
| R
| S
| T
| U
| V
| W
| X
| Y
| Z
Copyright © 1998
 O'Reilly & Associates, Inc.
All Rights Reserved.