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  2. Uninitialized variable - Wikipedia

    en.wikipedia.org/wiki/Uninitialized_variable

    In C, variables with static storage duration that are not initialized explicitly are initialized to zero (or null, for pointers). [ 3 ] Not only are uninitialized variables a frequent cause of bugs, but this kind of bug is particularly serious because it may not be reproducible: for instance, a variable may remain uninitialized only in some ...

  3. Data segment - Wikipedia

    en.wikipedia.org/wiki/Data_segment

    In computing, a data segment (often denoted .data) is a portion of an object file or the corresponding address space of a program that contains initialized static variables, that is, global variables and static local variables. The size of this segment is determined by the size of the values in the program's source code, and does not change at ...

  4. .bss - Wikipedia

    en.wikipedia.org/wiki/.bss

    In C, statically allocated objects without an explicit initializer are initialized to zero (for arithmetic types) or a null pointer (for pointer types).Implementations of C typically represent zero values and null pointer values using a bit pattern consisting solely of zero-valued bits (despite filling bss with zero is not required by the C standard, all variables in .bss are required to be ...

  5. init - Wikipedia

    en.wikipedia.org/wiki/Init

    sysv-rc-conf, a TUI utility that selects which SysV-style init scripts will be run in each runlevel. When compared to its predecessors, AT&T's UNIX System III introduced a new style of system startup configuration, [9] which survived (with modifications) into UNIX System V and is therefore called the "SysV-style init".

  6. Hardware abstraction - Wikipedia

    en.wikipedia.org/wiki/Hardware_abstraction

    A hardware abstraction layer (HAL) is an abstraction layer, implemented in software, between the physical hardware of a computer and the software that runs on that computer. . Its function is to hide differences in hardware from most of the operating system kernel, so that most of the kernel-mode code does not need to be changed to run on systems with different hardwa

  7. Booting process of Linux - Wikipedia

    en.wikipedia.org/wiki/Booting_process_of_Linux

    The startup function startup_32() for the kernel (also called the swapper or process 0) establishes memory management (paging tables and memory paging), detects the type of CPU and any additional functionality such as floating point capabilities, and then switches to non-architecture specific Linux kernel functionality via a call to start ...

  8. Initialization (programming) - Wikipedia

    en.wikipedia.org/wiki/Initialization_(programming)

    In computer programming, initialization or initialisation is the assignment of an initial value for a data object or variable. The manner in which initialization is performed depends on the programming language, as well as the type, storage class, etc., of an object to be initialized.

  9. Startup Disk Creator - Wikipedia

    en.wikipedia.org/wiki/Startup_Disk_Creator

    Startup Disk Creator (USB-creator) is an official tool to create Live USBs of Ubuntu from the Live CD or from an ISO image. The tool is included by default in all releases after Ubuntu 8.04, and can be installed on Ubuntu 8.04. A KDE frontend was released for Ubuntu 8.10, and is currently included by default in Kubuntu installations. The KDE ...