lsof  4.94.0
About: LSOF (LiSt Open Files) displays information about files open to Unix processes. Distributed package. A hint: The old lsof homepage is now stale and the hostname of the according FTP server ( is no longer DNS resolvable.
  Fossies Dox: lsof-4.94.0.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

lsof Documentation

Some Fossies usage hints in advance:

  1. To see the Doxygen generated documentation please click on one of the items in the steelblue colored "quick index" bar above or use the side panel at the left which displays a hierarchical tree-like index structure and is adjustable in width.
  2. If you want to search for something by keyword rather than browse for it you can use the client side search facility (using Javascript and DHTML) that provides live searching, i.e. the search results are presented and adapted as you type in the Search input field at the top right.
  3. Doxygen doesn't incorporate all member files but just a definable subset (basically the main project source code files that are written in a supported language). So to search and browse all member files you may visit the Fossies lsof-4.94.0.tar.gz contents page and use the Fossies standard member browsing features (also with source code highlighting and additionally with optional code folding).

Travis CI Linux Build Status Coveralls Linux Coverage Status on Travis CI


The lsof-org team at GitHub takes over the maintainership of lsof originally maintained by Vic Abell. This repository is for maintaining the final source tree of lsof inherited from Vic. "legacy" branch keeps the original source tree. We will not introduce any changes to the "legacy" branch. This branch is just for reference.

"master" branch is used for maintenance. Bug fixes and enhancements go to "master" branch.

lsof has supported many OSes. A term "dialect" represents code for supporting a OSes. Because of limitted resources, we will maintain the part of them. The current status of maintaince is as follows:

partially maintained, but testing on Cirrus CI is temporary disabled
fully maintained, and tested on Travis CI
not maintained, but partially tested on Travis CI

If you are interested in maintaining a dialect, let us know via the issue tracker of GitHub ( If we cannot find a volunteer for a dialect, we will remove the dialect.

Many texts in the source tree still refers as the home of lsof development. It should be, the new home. The updating is in progress.

We ran another repository, lsof-org/"lsof-linux" derived from lsof-4.91 that was also released by Vic. The repository is no more used; all the changes made in the repository are now in lsof-org/"lsof" repository.

The lsof-org team at GitHub