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[](https://circleci.com/gh/lsof-org/lsof)
[](https://cirrus-ci.com/github/lsof-org/lsof)
[](https://builds.sr.ht/~jiegec/lsof?)
[](https://lsof.readthedocs.io/en/latest/)
# lsof
[lsof](https://en.wikipedia.org/wiki/Lsof) is a command listing open files.
## How it works:
```
$ cat > /tmp/LOG &
cat > /tmp/LOG &
[1] 18083
$ lsof -p 18083
lsof -p 18083
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
cat 18083 yamato cwd DIR 0,44 1580 43460784 /tmp/lsof
cat 18083 yamato rtd DIR 253,2 4096 2 /
cat 18083 yamato txt REG 253,2 47432 678364 /usr/bin/cat
cat 18083 yamato mem REG 253,2 111950656 681778 /usr/lib/locale/locale-archive
cat 18083 yamato mem REG 253,2 2119256 679775 /usr/lib64/libc-2.27.so
cat 18083 yamato mem REG 253,2 187632 655943 /usr/lib64/ld-2.27.so
cat 18083 yamato mem REG 253,2 26370 662532 /usr/lib64/gconv/gconv-modules.cache
cat 18083 yamato mem REG 253,2 3316 1578981 /usr/lib/locale/en_US.utf8/LC_TIME
cat 18083 yamato 0u CHR 136,3 0t0 6 /dev/pts/3
cat 18083 yamato 1w REG 0,44 0 54550934 /tmp/LOG
cat 18083 yamato 2u CHR 136,3 0t0 6 /dev/pts/3
```
Read the documentation at [lsof.readthedocs.io](https://lsof.readthedocs.io/)
# lsof-org at GitHub
The lsof-org team at GitHub takes over the maintainership of lsof originally
developed and 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 had supported many OSes. A term "dialect" represents code for supporting
OSes. Because of limited resources, we will maintain the part of them. The
current status of maintenance is as follows:
<dl>
<dt>FreeBSD</dt>
<dd>fully maintained and tested on Cirrus CI</dd>
<dt>Linux</dt>
<dd>fully maintained, and tested on Circle CI</dd>
<dt>Darwin</dt>
<dd>fully maintained, and tested on Circle CI</dd>
<dt>NetBSD</dt>
<dd>fully maintained, and tested on SourceHut CI</dd>
<dt>OpenBSD</dt>
<dd>fully maintained, and tested on SourceHut CI</dd>
<dt>Solaris/OpenIndiana</dt>
<dd>fully maintained</dd>
</dl>
If you are interested in maintaining a dialect, let us know via the issue
tracker of GitHub (https://github.com/lsof-org/lsof/issues). If we cannot find a
volunteer for a dialect, we will remove the dialect.
Many texts in the source tree still refers purdue.edu as the home of lsof
development. It should be https://github.com/lsof-org/lsof, 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
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