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
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:
- freebsd
- partially maintained and tested on Cirrus CI
- linux
- fully maintained, and tested on Travis CI
- darwin
- 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 (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