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# Index: U

ulimit
  10.2.2. ulimit
  A.1. The Bourne Shell
  hard vs. soft limits : 10.2.2. ulimit
  options
    -a (print all limits) : 10.2.2. ulimit
    -c (core file size) : 10.2.2. ulimit
    -d (process data segment) : 10.2.2. ulimit
    -f (file size) : 10.2.2. ulimit
    -n (file descriptors) : 10.2.2. ulimit
    -s (process stack segment) : 10.2.2. ulimit
    -t (process CPU time) : 10.2.2. ulimit
    -v (virtual memory) : 10.2.2. ulimit
  privileged (superuser) options to : 10.2.2. ulimit
  removing limits : 10.2.2. ulimit
Ultrix
  1. Korn Shell Basics
  1.3. History of UNIX Shells
  1.9.5. Control Keys
umask
  10.2.1. umask
  A.6. Workalikes on PC Platforms
  as logical XOR with file permission : 10.2.1. umask
unalias : 3.2.1. Tracked Aliases
uncompress : 1.8. Background Jobs
UNIX
  Command Syntax Standard Rules : 6.1.3. getopts
  documentation conventions : 4.3.1. Syntax of String Operators
  filenames in BSD : 7.2.2.3. Code blocks
  filenames in System V
    6.3.3. String Formatting Options
    7.2.2.3. Code blocks
  interprocess communication in : 8.3. Signals
  Programmer's Manual
    8. Process Handling
    8.3.3.2. BSD
  security : (see security)
  shell history : 1.3. History of UNIX Shells
  terminal interface
    2. Command-line Editing
    2.3.4. Moving Around in the History File
    2.3.6. Miscellaneous Commands
    2.4. Vi Editing Mode
  utilities : 1.7.1. Standard I/O
  versions
    A/UX
      1. Korn Shell Basics
      1.9.5. Control Keys
    AIX
      1. Korn Shell Basics
      8.3.3. ps
    BSD
      1.3. History of UNIX Shells
      1.9.5. Control Keys
      2.3.4. Moving Around in the History File
      2.3.6. Miscellaneous Commands
      2.4. Vi Editing Mode
      3.4. Shell Variables
      3.4.2.2. Mail Variables
      4.4. Command Substitution
      7.2.2.3. Code blocks
      8.3. Signals
      8.3.3. ps
      8.3.3.2. BSD
      9.2.3.3. Breakpoints
      A.2. The IEEE 1003.2 POSIX Shell Standard
      A.4. pdksh
    HP/UX
      1. Korn Shell Basics
      1.9.5. Control Keys
      8.3.3. ps
    SCO : 1.9.5. Control Keys
    SunOS
      1. Korn Shell Basics
      1.3. History of UNIX Shells
      1.9.5. Control Keys
      4.4. Command Substitution
      8.3.3. ps
      A.1. The Bourne Shell
      A.3. wksh
      A.4. pdksh
    System III
      1.9.5. Control Keys
      8.2. Job Control
    System V
      1.9.5. Control Keys
      3.4. Shell Variables
      3.4.2.4. Terminal Types
      6.3.3. String Formatting Options
      7.2.2.3. Code blocks
      8.2. Job Control
      8.3. Signals
      8.3.3. ps
      9.2.3.3. Breakpoints
      A.2. The IEEE 1003.2 POSIX Shell Standard
    System V Release 4
      Korn Shell Versions
      1.3.1. The Korn Shell
      1.4. Getting the Korn Shell
      6.1.3.1. More About C Compilers
      A.3. wksh
    that don't support job control : 8.2. Job Control
    Ultrix
      1. Korn Shell Basics
      1.3. History of UNIX Shells
      1.9.5. Control Keys
      8.3.3. ps
    UTS : 1. Korn Shell Basics
    Version 6 : 4.3.2. Patterns and Regular Expressions
    Version 7
      1.3. History of UNIX Shells
      A.1. The Bourne Shell
      A.2. The IEEE 1003.2 POSIX Shell Standard
      A.4. pdksh
    Xenix
      1. Korn Shell Basics
      1.9.5. Control Keys
      8.2. Job Control
  workalikes
    Coherent : A.6. Workalikes on PC Platforms
    Minix : A.6. Workalikes on PC Platforms
UNIX commands : C.4. UUCP
UNIX System Laboratories (USL)
  1.3.1. The Korn Shell
  A.3. wksh
  A.7. The Future of the Korn Shell
  address and phone number : A.3. wksh
unset
  in POSIX shell : A.2. The IEEE 1003.2 POSIX Shell Standard
until
  5.4. select
  5.5. while and until
  differences with while : 5.5. while and until
  redirecting I/O to : 7.2.2.2. I/O Redirection and multiple commands
  syntax : 5.5. while and until
USENET
  comp.binaries.os2 newsgroup : A.6. Workalikes on PC Platforms
  comp.sources.unix newsgroup : A.4. pdksh
user-controlled multitasking : 8. Process Handling
/usr/bin
  3.4.2.5. Command Search Path
  10.3.2. A System Break-in Scenario
/usr/lib : 9.2.1.1. The driver script
/usr/tmp : 8.4.2. Process ID Variables and Temporary Files
UTS : 1. Korn Shell Basics
uucp
  7.1.1. Here-documents
  A.6. Workalikes on PC Platforms
uucp command : C.4. UUCP

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