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Index: U

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

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