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Subdirectories
In computing, a directory is a file system cataloging structure that contains references to other computer files, and possibly other directories. On many computers, directories are known as folders or drawers, analogous to a workbench or the traditional office filing cabinet. The name derives from books like a telephone directory that lists the phone numbers of all the people living in a certain area. Files are organized by storing related files in the same directory. In a hierarchical file system (that is, one in which files and directories are organized in a manner that resembles a tree), a directory contained inside another directory is called a subdirectory. The terms parent and child are often used to describe the relationship between a subdirectory and the directory in which it is cataloged, the latter being the parent. The top-most directory in such a filesystem, which does not have a parent of its own, is called the root directory. The freedesktop.org media type for d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hierarchical File System
In computing, a hierarchical file system is a file system that uses directories to organize files into a tree structure. In a hierarchical file system, ''directories'' contain information about both files and other directories, called ''subdirectories'' which, in turn, can point to other subdirectories, and so on. This is organized as a tree structure, or ''hierarchy'', generally portrayed with the root at the top. The ''root directory'' is the base of the hierarchy, and is usually stored at some fixed location on disk. A hierarchical file system contrasts with a '' flat file system'', where information about all files is stored in a single directory, and there are no subdirectories. Almost all file systems today are hierarchical. What is referred to as a file system is a specific instance of a hierarchical system. For example, NTFS, HPFS, and ext4, all implement a hierarchical system with different features for buffering, file allocation, and file recovery. Concepts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Working Directory
In computing, the working directory of a process is a directory of a hierarchical file system, if any, dynamically associated with the process. It is sometimes called the current working directory (CWD), e.g. the BSD getcwd function, or just current directory. When a process refers to a file using a path that is a relative path, such as a path on a Unix-like system that does not begin with a / (forward slash) or a path on Windows that does not begin with a \ (backward slash), the path is interpreted as relative to the process's working directory. So, for example a process on a Unix-like system with working directory /rabbit-shoes that attempts to create the file foo.txt will end up creating the file /rabbit-shoes/foo.txt. In operating systems In most computer file systems, every directory has an entry (usually named ".") which points to the directory itself. In most DOS and UNIX command shells, as well as in the Microsoft Windows command line interpreters cmd.exe and Wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Home Directory
A home directory is a directory (file systems), file system directory on a multi-user operating system containing computer file, files for a given user (computing), user of the system. The specifics of the home directory (such as its name and location) are defined by the operating system involved; for example, Linux / BSD (Filesystem Hierarchy Standard, FHS) systems use /home/ or /usr/home/, macOS uses /Users/, and Microsoft Windows, Windows systems since Windows Vista use \Users\. Description A user's home directory is intended to contain that user's files; including text documents, music, pictures, videos, etc. It may also include their configuration files of preferred settings for any software they have used there and might have tailored to their liking: web browser bookmark (digital), bookmarks, favorite desktop metaphor, desktop wallpaper (computing), wallpaper and theme (computing), themes, stored passwords to any external services accessed via a given software, etc. The use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System
An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for efficient use of the system and may also include accounting software for cost allocation of Scheduling (computing), processor time, mass storage, peripherals, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computerfrom cellular phones and video game consoles to web servers and supercomputers. , Android (operating system), Android is the most popular operating system with a 46% market share, followed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dir Command In Windows Command Prompt
Dir, dir, or DIR may refer to: Acronyms * '' De Imperatoribus Romanis'', an online biographical encyclopedia of the Roman emperors from 27 BC to 1453 AD * Detroit International Riverfront, an area of Detroit, Michigan in the United States * Developmental, Individual differences, Relationship-based approach, a developmental intervention to autism * Digitally Imported Radio, an internet radio station * Digital Instrumentation Recorder, a magnetic tape format by Sony * Doing It Right, a methodology for scuba diving * Double inversion recovery, an MRI sequence In computing * An abbreviation for directory (file systems) * dir (command), a shell command * directory (OpenVMS command), an operating system command * , an HTML element Places and areas * Dir, Pakistan, a town in the Khyber Pakhtunkhwa province of Pakistan * Dir (union council), an administrative unit in the Khyber Pakhtunkhwa province of Pakistan * Dir (princely state), a former princely state in the North-West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Recording Machine, Accounting
ERMA (Electronic Recording Machine, Accounting) was a computer technology that automated bank bookkeeping and Cheque clearing, check processing. Developed at the nonprofit research institution SRI International under contract from Bank of America, the project began in 1950 and was publicly revealed in September 1955. Payments experts contend that ERMA "established the foundation for Online banking, computerized banking, magnetic ink character recognition (MICR), and credit-card Payment processor, processing". General Electric (GE) won the production contract, deciding to transistorize the design in the process. Calling the machine the GE-100, a total of 32 ERMA machines were built. GE would use this experience to develop several mainframe computer lines before selling the division to Honeywell in 1970. History Background In 1950, Bank of America (BoA) was the largest bank in California, and led the world in the use of Cheque, cheques. This presented a serious problem due to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
File Folder
A file folder (or simply folder) is a kind of folder that holds papers together for organization and protection. File folders usually consist of a sheet of heavy paper stock or other thin, but stiff, material which is folded in half, and are used to keep paper documents. They are often used in conjunction with a filing cabinet for storage. File folders can easily be purchased at office supplies stores. File folders are usually labelled based on what is inside them. Folders can be labeled directly on the tab with a pen or pencil. Others write on adhesive labels that are placed on the tabs. There are also electronic label makers that can be used to make the labels. File folders can be made from plastic or paper. When paper is used, it is preferable that it is made from paper pulp with long cellulose fibre, such as kraft paper or manila paper. File folders are a core organisational tool of bureaucracy, business administration and scientific management. The medical profession, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
System Call
In computing, a system call (syscall) is the programmatic way in which a computer program requests a service from the operating system on which it is executed. This may include hardware-related services (for example, accessing a hard disk drive or accessing the device's camera), creation and execution of new processes, and communication with integral kernel services such as process scheduling. System calls provide an essential interface between a process and the operating system. In most systems, system calls can only be made from userspace processes, while in some systems, OS/360 and successors for example, privileged system code also issues system calls. For embedded systems, system calls typically do not change the privilege mode of the CPU. Privileges The architecture of most modern processors, with the exception of some embedded systems, involves a security model. For example, the '' rings'' model specifies multiple privilege levels under which software may be e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Unix Philosophy
The Unix philosophy, originated by Ken Thompson, is a set of cultural norms and philosophical approaches to Minimalism (computing), minimalist, Modularity (programming), modular software development. It is based on the experience of leading developers of the Unix operating system. Early Unix developers were important in bringing the concepts of modularity and reusability into software engineering practice, spawning a "software tools" movement. Over time, the leading developers of Unix (and programs that ran on it) established a set of cultural norms for developing software; these norms became as important and influential as the technology of Unix itself, and have been termed the "Unix philosophy." The Unix philosophy emphasizes building simple, compact, clear, modular, and Extensibility, extensible code that can be easily maintained and repurposed by developers other than its creators. The Unix philosophy favors composability as opposed to Monolithic application, monolithic design ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Root User
In computing, the superuser is a special user account used for system administration. Depending on the operating system (OS), the actual name of this account might be root, administrator, admin or supervisor. In some cases, the actual name of the account is not the determining factor; on Unix-like systems, for example, the user with a user identifier (UID) of zero is the superuser .e., uid=0 regardless of the name of that account; and in systems which implement a r model, any user with the role of superuser (or its synonyms) can carry out all actions of the superuser account. The principle of least privilege recommends that most users and applications run under an ordinary account to perform their work, as a superuser account is capable of making unrestricted, potentially adverse, system-wide changes. Unix and Unix-like In Unix-like computer OSes (such as Linux), ''root'' is the conventional name of the user who has all rights or permissions (to all files and programs) in all mod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
