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Publisher · Open source

lsof Project

The lsof project maintains lsof (LiSt Open Files), a Unix command-line utility that lists files opened by processes. It is free software under a permissive Purdue University licence.

Licensing at a Glance

  • Open source

  1. lsof was developed and maintained by Vic Abell from 1994; maintainership has passed to the lsof-org team on GitHub.[1]

  2. The lsof licence permits anyone to use the software for any purpose on any computer system and to alter and redistribute it freely, subject to the licence conditions.[2]

  3. Conditions include that credit to the authors and Purdue University appears in documentation and sources, altered versions are plainly marked, and the licence notice is not removed.[3]

  4. lsof is actively maintained for Linux, FreeBSD, macOS, NetBSD, OpenBSD and Solaris/OpenIndiana; AIX, HP-UX and SCO ports are not maintained.[4]

Products

  • lsof

References

  1. lsof · lsof.readthedocs.io · retrieved 2026-09-27
  2. lsof COPYING · raw.githubusercontent.com · retrieved 2026-09-27
  3. lsof COPYING · raw.githubusercontent.com · retrieved 2026-09-27
  4. lsof · lsof.readthedocs.io · retrieved 2026-09-27
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