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Linux Guide - L

  • LAN
    Local Area Network
  • latency
    The time it takes for a data packet to move across a network connection
    The dynamic library loader. Each binary using shared libraries used to have about 3K of start-up code to find and load the shared libraries. Now that code has been put in a special shared library, /lib/, where all binaries can look for it, so that it wastes less disk space, and can be upgraded more easily
  • LDAP
    Lightwight Directory Access Protocol. Allows network nodes to get info on other nodes
  • Le Marois, Jacques
    producer of the popular Red Hat Linux-based Mandrake distribution
  • lex
    a "Lexical Analyser". Its main job is to break up an input stream into more usable elements.
  • libnsl
    Name services library, a library of name service calls (getpwnam, getservbyname, etc...) on SVR4 Unixes. GNU libc uses this for the NIS (YP) and NIS+ functions
  • library
    A collection of subroutines and functions stored in one or more files, usually in compiled form, for linking with other programs. Libraries are one of the earliest forms of organised code reuse
  • libsocket
    Socket services library, a library for the socket service calls (socket, bind, listen, etc...) on SVR4 Unixes
  • license Licenses commonly used by Linux programs
    a legal document that specifies the terms by which the software can be used.  Violation of the software license is a breach of copyright law
  • lightweight processes
    See threaded code
  • LILO
    A versatile boot loader for Linux. It does not depend on a specific file system, can boot Linux kernel images from floppy disks and from hard disks and can even act as a boot manager'' for other operating systems
  • Linux
    a completely free reimplementation of the POSIX specification, with SYSV and BSD extensions (which means it looks like Unix, but does not come from the same source code base), which is available in both source code and binary form
  • Lisp
    LISt Processing language - Artificial Intelligence's mother tongue, a symbolic, functional, recursive language based on the ideas of lambda-calculus, variable-length lists and trees as fundamental data types and the interpretation of code as data and vice-vers
  • list
    A sequence of one or more pipelines separated by one of the operators ;, &, &&, or ||, and terminated by one of ;, &, or .
    provide a forum for the exchange of information and ideas through email. A popular mailing list server for Linux is Majordomo
  • ln
    make links between files
  • load balancing
    distributing processing and communications activity evenly across a computer network so that no single device is overwhelmed
  • loopback address
    a special IP number ( that is designated for the software loopback interface of a machine. through is also reserved for loopback and is used for internal testing on local machines
  • low-level language
    A computer language that deals with hardware registers by name; also known as assembly language. A program written in a low-level language can be used only on a computer system that uses one type of main processor (or possibly a member of a family of processors)
  • lpd
    Lpd is the line printer daemon (spool area handler) and is normally invoked at boot time from the rc(8) file. It makes a single pass through the printcap(5) file to find out about the existing printers and prints any files left after a crash. It then uses the system calls listen and accept to receive requests to print files in the queue, transfer files to the spooling area, display the queue, or remove jobs from the queue. In each case, it forks a child to handle the request so the parent can continue to listen for more requests.
  • lpq
    lpq examines the spooling area used by lpd for printing files on the line printer, and reports the status of the specified jobs or all jobs associated with a user. Lpq invoked without any arguments reports on any jobs currently in the queue.
  • lpr
    The line printer command uses a spooling daemon to print the named files when facilities become available. If no names appear, the standard input is assumed.
  • ls
    The program ls lists first its non-directory file arguments, and then for each directory argument all listable files contained within that directory.
  • LUG
    Linux Users' Group - A LUG is a group of Linux users. Usually avid Linux users and advocates join a local LUG
  • LVM
    Logical Volume Manager: Most Unix-like systems now have the ability to break up physical discs into some number of units. Storage units from multiple drives can be pooled into a "logical volume", where they can be allocated to partitions. Additionally, units can be added or removed from partitions as space requirements change.
  • lynx
    A text-based, non-graphical web brower for use in Telnet session
  • LZO
    Lempel-Ziv-Oberhumer (a compression algorithm)

Key:  Commands - People - General

Last Updated Saturday, December 11 2004 @ 08:06 PM EST

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