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In computing, a namespace is a set of signs (names) that are used to identify and refer to objects of various kinds. A namespace ensures that all of a given set of objects have unique names so that they can be easily identified. Namespaces are commonly structured as hierarchies to allow reuse of names in different contexts.
Namespaces are a required aspect of functioning containers in Linux. The term "namespace" is often used to denote a specific type of namespace (e.g., process ID) as well as for a particular space of names. [1] A Linux system begins with a single namespace of each type, used by all processes.
Wikipedia has 28 current namespaces: 13 subject namespaces, 13 corresponding talk namespaces, and 2 virtual namespaces. These are all listed in the box to the right. While surfing Wikipedia, a list of namespaces is available in two clicks: do an empty search, then click Advanced under the search box.
A list of commonly used edit summary abbreviations. (An edit summary is a brief explanation of an edit to a Wikipedia page.) Glossary A list of terms (slang) commonly used by editors during discussions. See also Reader's glossary. List of shortcuts A gigantic list of pages and their "abbreviated redirects".
A namespace name is a uniform resource identifier (URI). Typically, the URI chosen for the namespace of a given XML vocabulary describes a resource under the control of the author or organization defining the vocabulary, such as a URL for the author's Web server.
Effectively namespaces web-based protocols from other, potentially less web-secure, protocols This convention is defined within the HTML Living Standard specification: web+ string of some lower-case alphabetic characters :
User namespace isolates the user IDs between namespaces. [31] Cgroup namespace [32] Namespaces are created with the "unshare" command or syscall, or as "new" flags in a "clone" syscall. [33] The "ns" subsystem was added early in cgroups development to integrate namespaces and control groups.
The "total pages" column refers to the number of pages in all namespaces, including both entries and non-entries (user pages, files, talk pages, "project" pages, categories, redirects, and templates). "Users" refers to the number of user accounts, regardless of current activity – not the number of people or devices using (accessing) Wiktionary.