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Link is a word with multiple technical uses. This page intends to disambiguate the usages, and provide web links (sorry, unavoidable self-reference) to some useful resources on each one. Pages should generally not link here, but to the unambiguous entry.


  • A link on a web page, also called either a URL or URI.
  • In Unix/Linux, a directory entry (which always contains a name and the number (hard_link) of the inode describing the entry).
  • In Unix/Linux, the system function link() which creates a new name (and link) for an existing file.
  • In Unix/Linux, the system command link which creates a new name (and link) for an existing file.
  • A data pathway or Data Link (Wikipedia page)
  • A number of non-computer meanings (chain link, evidence, etc.)


  • To process compiled portions of a program into a single executable program, usually including one or more libraries. Sometimes known as link editing. A program that does this may be called a linker or link editor. Usually the last phase of program creation in compiled languages.
  • To create a link, whether hard_link, hyperlink or other. (ex: link to that web page).

This is a disambiguation page - it contains links to different pages which are referenced here under the same page name. If you've followed a link and have arrived on this page, you might want to go back and modify the link to point to the most appropriate article which is listed on this page.