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</style><table class="infobox vevent"><tbody><tr><th colspan="2" class="infobox-above summary">lsof</th></tr><tr><td colspan="2" class="infobox-image logo"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Programmer" title="Programmer">Original author(s)</a></th><td class="infobox-data">Victor A. Abell</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Initial release</th><td class="infobox-data">1991<span style="display:none"> (<span class="bday dtstart published updated">1991</span>)</span><sup id="cite_ref-lsofv1_1-0" class="reference"><a href="#cite_note-lsofv1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr style="display: none;"><td colspan="2" class="infobox-full-data"></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_release_life_cycle" title="Software release life cycle">Stable release</a></th><td class="infobox-data"><div style="margin:0px;">4.99.5<sup id="cite_ref-wikidata-80138e38f3b38684b70c8e81376b5cd6e802897b-v20_2-0" class="reference"><a href="#cite_note-wikidata-80138e38f3b38684b70c8e81376b5cd6e802897b-v20-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
/ 1 July 2025<span style="display:none"> (<span class="bday dtstart published updated">1 July 2025</span>)</span></div></td></tr><tr style="display:none"><td colspan="2">
</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Repository_(version_control)" title="Repository (version control)">Repository</a></th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://github.com/lsof-org/lsof">github<wbr>.com<wbr>/lsof-org<wbr>/lsof</a></span></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Written in</th><td class="infobox-data">C</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Operating_system" title="Operating system">Operating system</a></th><td class="infobox-data"><a href="Linux" title="Linux">Linux</a>, <a href="FreeBSD" title="FreeBSD">FreeBSD</a>, <a href="MacOS" title="MacOS">macOS</a>, <a href="Oracle_Solaris" title="Oracle Solaris">Solaris</a>, <a href="NetBSD" title="NetBSD">NetBSD</a> and <a href="OpenBSD" title="OpenBSD">OpenBSD</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Computing_platform" title="Computing platform">Platform</a></th><td class="infobox-data">Cross-platform</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="Software_license" title="Software license">License</a></th><td class="infobox-data"><a href="BSD_license" class="mw-redirect" title="BSD license">BSD license</a>-compatible<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Website</th><td class="infobox-data"><span class="url"><a rel="nofollow" class="external text" href="https://lsof.readthedocs.io">lsof<wbr>.readthedocs<wbr>.io</a></span> <span class="penicon autoconfirmed-show"></span></td></tr></tbody></table>
<p><b>lsof</b> is a command meaning "list open files", which is used in many <a href="Unix-like" title="Unix-like">Unix-like</a> systems to report a list of all open files and the processes that opened them. This <a href="Open-source_software" title="Open-source software">open source</a> utility was developed and supported by Victor A. Abell, the retired Associate Director of the <a href="Purdue_University" title="Purdue University">Purdue University</a> Computing Center. It works in and supports several Unix flavors.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p><p>A replacement for Linux, <b><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">lsfd</code></b>, is included in <a href="Util-linux" title="Util-linux">util-linux</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>
</p>
<meta property="mw:PageProp/toc">
<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>
<p>In 1985, Cliff Spencer publishes the <b><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">ofiles</code></b> command. Its <a href="Man_page" title="Man page">man page</a> says: "ofiles – who has a file open [...] displays the owner and id of any process accessing a specified device". Spencer compiled it for <a href="4.2BSD" class="mw-redirect" title="4.2BSD">4.2BSD</a> and <a href="ULTRIX" class="mw-redirect" title="ULTRIX">ULTRIX</a>.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Moreover, in the <a href="Newsgroup" class="mw-redirect" title="Newsgroup">newsgroup</a> net.unix-wizards, he further remarks:<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup>
</p>
<blockquote>
<p>With all the chatter about dismounting active file systems,
I have posted my program to indicate who is using
a particular filesystem, "ofiles" to net.sources.
</p>
</blockquote>
<p>In 1988, the command <b><code class="mw-highlight mw-highlight-lang-text mw-content-ltr" style="" dir="ltr">fstat</code></b> ("file status") appears as part of the <a href="4.3BSD-Tahoe" class="mw-redirect" title="4.3BSD-Tahoe">4.3BSD-Tahoe</a> release. Its man page says:<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>
</p>
<blockquote>
<p><i>fstat</i> identifies open files. A file is considered open if a
process has it open, if it is the working directory for a
process, or if it is an active pure text file. If no
options are specified, <i>fstat</i> reports on all open files.
</p>
</blockquote>
<p>In 1989, in comp.sources.unix, Vic Abell publishes ports of the ofiles and fstat commands from <a href="4.3BSD-Tahoe" class="mw-redirect" title="4.3BSD-Tahoe">4.3BSD-Tahoe</a> to "<a href="DYNIX" title="DYNIX">DYNIX</a>
3.0.1[24] for Sequent Symmetry and Balance, <a href="SunOS" title="SunOS">SunOS</a> 4.0 and <a href="ULTRIX" class="mw-redirect" title="ULTRIX">ULTRIX</a> 2.2".<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-fstat_10-0" class="reference"><a href="#cite_note-fstat-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> Various people had evolved and ported ofiles over the years. Abell contrasted the commands as follows:<sup id="cite_ref-fstat_10-1" class="reference"><a href="#cite_note-fstat-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>
</p>
<blockquote>
<p>Fstat is similar to the ofiles program which I recently submitted. Like
ofiles, fstat identifies open files. It's orientation differs slightly
from that of ofiles: ofiles starts with a file name and paws through the
proc and user structures to identify the file; fstat reads all the proc
and user structures, displaying information in all files, optionally
applying a few filters to the output (including a single file name filter.)
</p><p>In combination with netstat -aA and grep, fstat will identify the process
associated with a network connection, just as will ofiles.
</p>
</blockquote>
<p>In 1991, Vic Abell publishes lsof version 1.0 to comp.sources.unix. He notes:<sup id="cite_ref-lsofv1_1-1" class="reference"><a href="#cite_note-lsofv1-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
</p>
<blockquote>
<p>Lsof (for LiSt Open Files) lists files opened by processes on selected
Unix systems. It is my answer to those who regularly ask me when I am
going to make fstat (comp.sources.unix volume 18, number 107) or ofiles
(volume 18, number 57) available on <a href="SunOS" title="SunOS">SunOS</a> 4.1.1 or the like.
</p><p>Lsof is a complete redesign of the fstat/ofiles series, based on the SunOS
vnode model. Thus, it has been tested on <a href="AIX" class="mw-redirect" title="AIX">AIX</a> 3.1.[357], <a href="HP-UX" title="HP-UX">HP-UX</a> [78].x,
<a href="NeXTStep" class="mw-redirect" title="NeXTStep">NeXTStep</a> 2.[01], Sequent <a href="Dynix" class="mw-redirect" title="Dynix">Dynix</a> 3.0.12 and 3.1.2, and <a href="Sunos" class="mw-redirect" title="Sunos">Sunos</a> 4.1 and 4.1.1.
Using available kernel access methods, such as nlist() and kvm_read(),
lsof reads process table entries, user areas and file pointers to reach
the underlying structures that describe files opened by processes.
</p>
</blockquote>
<p>In 2018, Vic Abbell publishes lsof version 4.92. The same year, he initiates the transfer of responsibility. He writes:<sup id="cite_ref-gh1_11-0" class="reference"><a href="#cite_note-gh1-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup>
</p>
<blockquote>
<p>I will reach 80 years of age later this year and I think it's time for me to end my work on general lsof revision releases.
</p>
</blockquote>
<p>The lsof code is put on Github and maintenance is transferred.<sup id="cite_ref-gh1_11-1" class="reference"><a href="#cite_note-gh1-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="Examples">Examples</h2></div>
<p>Open files in the system include disk files, <a href="Named_pipe" title="Named pipe">named pipes</a>, network <a href="Internet_socket" class="mw-redirect" title="Internet socket">sockets</a> and devices opened by all processes. One use for this command is when a disk cannot be unmounted because (unspecified) files are in use. The listing of open files can be consulted (suitably filtered if necessary) to identify the process that is using the files.
</p>
<div class="mw-highlight mw-highlight-lang-console mw-content-ltr" dir="ltr"><pre><span class="gp"># </span>lsof<span class="w"> </span>/var
<span class="go">COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME</span>
<span class="go">syslogd 350 root 5w VREG 222,5 0 440818 /var/adm/messages</span>
<span class="go">syslogd 350 root 6w VREG 222,5 339098 6248 /var/log/syslog</span>
<span class="go">cron 353 root cwd VDIR 222,5 512 254550 /var -- atjobs</span>
</pre></div>
<p>To view the port associated with a daemon:
</p>
<div class="mw-highlight mw-highlight-lang-console mw-content-ltr" dir="ltr"><pre><span class="gp"># </span>lsof<span class="w"> </span>-i<span class="w"> </span>-n<span class="w"> </span>-P<span class="w"> </span><span class="p">|</span><span class="w"> </span>grep<span class="w"> </span>sendmail
<span class="go">sendmail 31649 root 4u IPv4 521738 TCP *:25 (LISTEN)</span>
</pre></div>
<p>From the above one can see that "sendmail" is listening on its standard port of "25".
</p>
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<dd>Lists IP sockets.</dd>
<dt><span class="monospaced">-n</span></dt>
<dd>Do not resolve hostnames (no DNS).</dd>
<dt><span class="monospaced">-P</span></dt>
<dd>Do not resolve port names (list port number instead of its name).</dd></dl>
<p>One can also list Unix Sockets by using <code>lsof -U</code>.
</p>
<div class="mw-heading mw-heading2"><h2 id="Lsof_output">Lsof output</h2></div>
<p>The lsof output describes:
</p>
<ul><li>the identification number of the process (PID) that has opened the file;</li>
<li>the process group identification number (PGID) of the process (optional);</li>
<li>the process identification number of the parent process (PPID) (optional);</li>
<li>the command the process is executing;</li>
<li>the owner of the process;</li>
<li>for all files in use by the process, including the executing text file and the shared libraries it is using:
<ul><li>the file descriptor number of the file, if applicable;</li>
<li>the file's access mode;</li>
<li>the file's lock status;</li>
<li>the file's device numbers;</li>
<li>the file's inode number;</li>
<li>the file's size or offset;</li>
<li>the name of the file system containing the file;</li>
<li>any available components of the file's path name;</li>
<li>the names of the file's stream components;</li>
<li>the file's local and remote network addresses;</li>
<li>the TLI network (typically UDP) state of the file;</li>
<li>the TCP state, read queue length, and write queue length of the file;</li>
<li>the file's TCP window read and write lengths (Solaris only); and</li>
<li>other file or dialect-specific values.</li></ul></li></ul>
<p>For a complete list of options, see the Lsof(8) Linux manual page.<sup id="cite_ref-lsof(8)_13-0" class="reference"><a href="#cite_note-lsof(8)-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup>
</p>
<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2></div>
<ul><li><a href="Fuser_(Unix)" title="Fuser (Unix)">fuser (Unix)</a></li>
<li><a href="Stat_(Unix)" class="mw-redirect" title="Stat (Unix)">stat (Unix)</a></li>
<li><a href="Netstat" title="Netstat">netstat</a></li>
<li><a href="Strace" title="Strace">strace</a></li>
<li><a href="List_of_Unix_commands" class="mw-redirect" title="List of Unix commands">List of Unix commands</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>
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<div class="mw-references-wrap mw-references-columns"><ol class="references">
<li id="cite_note-lsofv1-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-lsofv1_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-lsofv1_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">
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</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://sources.vsta.org/comp.sources.unix/volume25/lsof">"v25i002: lsof - a successor to fstat and ofiles"</a>. comp.sources.unix. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230110165833/https://sources.vsta.org/comp.sources.unix/volume25/lsof">Archived</a> from the original on 2023-01-10<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-04-13</span></span>.</cite></span>
</li>
<li id="cite_note-wikidata-80138e38f3b38684b70c8e81376b5cd6e802897b-v20-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-wikidata-80138e38f3b38684b70c8e81376b5cd6e802897b-v20_2-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/lsof-org/lsof/releases/tag/4.99.5">"Release lsof 4.99.5 · lsof-org/lsof"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">1 July</span> 2025</span>.</cite></span>
</li>
<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="ftp://lsof.itap.purdue.edu/pub/tools/unix/lsof/FAQ">lsof FAQ, 1.9 Is there an lsof license?</a></span>
</li>
<li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite id="CITEREFW._Richard_StevensBill_FennerAndrew_M._Rudoff2003" class="citation cs2">W. Richard Stevens; Bill Fenner; Andrew M. Rudoff (2003), <a rel="nofollow" class="external text" href="https://books.google.com/books?id=ptSC4LpwGA0C&dq=Lsof&pg=RA1-PA897"><i>Unix Network Programming: the Sockets networking API</i></a>, Addison-Wesley Professional, <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>978-0-13-141155-5</bdi></cite></span>
</li>
<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/util-linux/util-linux/pull/1418">"RFC: lsfd, a brand new Linux specific replacement for lsof #1418"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230219081423/https://github.com/util-linux/util-linux/pull/1418">Archived</a> from the original on 2023-02-19<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-02-19</span></span>.</cite></span>
</li>
<li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><cite id="CITEREFSpencer" class="citation web cs1">Spencer, Cliff. <a rel="nofollow" class="external text" href="https://groups.google.com/g/net.sources/c/L82MvsQrnoA/m/LOADevFckCkJ">"ofiles(8)"</a>. <i>groups.google.com</i>. net.sources. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230413052716/https://groups.google.com/g/net.sources/c/L82MvsQrnoA/m/LOADevFckCkJ">Archived</a> from the original on 2023-04-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-04-13</span></span>.</cite></span>
</li>
<li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><cite id="CITEREFSpencer" class="citation web cs1">Spencer, Cliff. <a rel="nofollow" class="external text" href="https://groups.google.com/g/net.unix-wizards/c/UyTm4kUMMDE/m/NzIh78IWdXkJ">""ofiles" posted to net.sources"</a>. <i>groups.google.com</i>. net.unix-wizards. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230413052718/https://groups.google.com/g/net.unix-wizards/c/UyTm4kUMMDE/m/NzIh78IWdXkJ">Archived</a> from the original on 2023-04-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-04-13</span></span>.</cite></span>
</li>
<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.tuhs.org/cgi-bin/utree.pl?file=4.3BSD-Tahoe/usr/man/cat8/fstat.0">"FSTAT(8)"</a>. <i>www.tuhs.org</i>. 4.3BSD-Tahoe.</cite></span>
</li>
<li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://sources.vsta.org/comp.sources.unix/volume18/ofiles.new">"v18i057: REVISED ofiles, doesn't need Sun source"</a>. comp.sources.unix.</cite></span>
</li>
<li id="cite_note-fstat-10"><span class="mw-cite-backlink">^ <a href="#cite_ref-fstat_10-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-fstat_10-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://sources.vsta.org/comp.sources.unix/volume18/fstat2">"v18i107: Show all open files status"</a>. comp.sources.unix.</cite></span>
</li>
<li id="cite_note-gh1-11"><span class="mw-cite-backlink">^ <a href="#cite_ref-gh1_11-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-gh1_11-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/Homebrew/homebrew-core/issues/39572#issuecomment-490877044">"lsof has moved to GitHub and has a new release · Issue #39572 · Homebrew/homebrew-core"</a>. <i>GitHub</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230413052713/https://github.com/Homebrew/homebrew-core/issues/39572#issuecomment-490877044">Archived</a> from the original on 2023-04-13<span class="reference-accessdate">. Retrieved <span class="nowrap">2023-04-13</span></span>.</cite></span>
</li>
<li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/lsof-org/lsof/blob/master/docs/maintaining.md">"lsof maintaining.md"</a>. <i>GitHub</i>. lsof-org. 10 April 2023. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230413052714/https://github.com/lsof-org/lsof/blob/master/docs/maintaining.md">Archived</a> from the original on 13 April 2023<span class="reference-accessdate">. Retrieved <span class="nowrap">13 April</span> 2023</span>.</cite></span>
</li>
<li id="cite_note-lsof(8)-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-lsof(8)_13-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://man7.org/linux/man-pages/man8/lsof.8.html">"lsof"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">16 July</span> 2020</span>.</cite></span>
</li>
</ol></div></div>
<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>
<ul><li><a rel="nofollow" class="external text" href="http://people.freebsd.org/~abe/">Old site</a></li>
<li><a rel="nofollow" class="external text" href="https://lists.purdue.edu/mailman/listinfo/lsof-l">lsof-l mailing list</a></li>
<li><a rel="nofollow" class="external text" href="http://ftp.mirrorservice.org/sites/lsof.itap.purdue.edu/pub/tools/unix/lsof/">mirror of legacy sources</a></li>
<li><span class="neverexpand"><code><a rel="nofollow" class="external text" href="https://linux.die.net/man/8/lsof">lsof(8)</a></code></span> – <a href="Linux" title="Linux">Linux</a> Administration and Privileged Commands <a href="Man_page" title="Man page">Manual</a></li>
<li><span class="neverexpand"><code><a rel="nofollow" class="external text" href="https://keith.github.io/xcode-man-pages/lsof.8.html">lsof(8)</a></code></span> – <a href="Darwin_(operating_system)" title="Darwin (operating system)">Darwin</a> and <a href="MacOS" title="MacOS">macOS</a> System Manager's <a href="Man_page" title="Man page">Manual</a></li>
<li><a rel="nofollow" class="external text" href="http://danielmiessler.com/study/lsof">Using lsof</a></li>
<li><a rel="nofollow" class="external text" href="http://ftp.mirrorservice.org/sites/lsof.itap.purdue.edu/pub/tools/unix/lsof/FAQ">Lsof FAQ</a></li>
<li>Sam Nelson's <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070509052951/http://www.unix.ms/pcp/">PCP</a> script, an alternative to "lsof -i" for Solaris.</li>
<li><a rel="nofollow" class="external text" href="https://glsof.sourceforge.net/">Glsof</a> is two separate utilities (Queries and Filemonitor) based on lsof.</li>
<li><a rel="nofollow" class="external text" href="https://github.com/sveinbjornt/Sloth">Sloth</a> is a macOS graphical interface for lsof</li>
<li><a rel="nofollow" class="external text" href="https://netadmintools.com/html/lsof.man.html">Manpage of LSOF</a></li></ul>
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</style><div id="Unix_command-line_interface_programs_and_shell_builtins541" style="font-size:114%;margin:0 4em"><a href="Unix" title="Unix">Unix</a> <a href="Command-line_interface" title="Command-line interface">command-line interface</a> programs and <a href="Shell_builtin" title="Shell builtin">shell builtins</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">File system</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Cat_(Unix)" title="Cat (Unix)">cat</a></li>
<li><a href="Chattr" title="Chattr">chattr</a></li>
<li><a href="Chmod" title="Chmod">chmod</a></li>
<li><a href="Chown" title="Chown">chown</a></li>
<li><a href="Chgrp" title="Chgrp">chgrp</a></li>
<li><a href="Cksum" title="Cksum">cksum</a></li>
<li><a href="Cmp_(Unix)" title="Cmp (Unix)">cmp</a></li>
<li><a href="Cp_(Unix)" title="Cp (Unix)">cp</a></li>
<li><a href="Dd_(Unix)" title="Dd (Unix)">dd</a></li>
<li><a href="Du_(Unix)" title="Du (Unix)">du</a></li>
<li><a href="Df_(Unix)" title="Df (Unix)">df</a></li>
<li><a href="File_(command)" title="File (command)">file</a></li>
<li><a href="Fuser_(Unix)" title="Fuser (Unix)">fuser</a></li>
<li><a href="Ln_(Unix)" title="Ln (Unix)">ln</a></li>
<li><a href="Ls" title="Ls">ls</a></li>
<li><a href="Mkdir" title="Mkdir">mkdir</a></li>
<li><a href="Mv_(Unix)" title="Mv (Unix)">mv</a></li>
<li><a href="Pax_(command)" title="Pax (command)">pax</a></li>
<li><a href="Pwd" title="Pwd">pwd</a></li>
<li><a href="Rm_(Unix)" title="Rm (Unix)">rm</a></li>
<li><a href="Rmdir" title="Rmdir">rmdir</a></li>
<li><a href="Split_(Unix)" title="Split (Unix)">split</a></li>
<li><a href="Tee_(command)" title="Tee (command)">tee</a></li>
<li><a href="Touch_(command)" title="Touch (command)">touch</a></li>
<li><a href="Type_(Unix)" title="Type (Unix)">type</a></li>
<li><a href="Umask" title="Umask">umask</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Processes</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="At_(command)" title="At (command)">at</a></li>
<li><a href="Job_control_(Unix)#Commands" title="Job control (Unix)">bg</a></li>
<li><a href="Cron" title="Cron">crontab</a></li>
<li><a href="Job_control_(Unix)#Commands" title="Job control (Unix)">fg</a></li>
<li><a href="Kill_(command)" title="Kill (command)">kill</a></li>
<li><a href="Nice_(Unix)" title="Nice (Unix)">nice</a></li>
<li><a href="Ps_(Unix)" title="Ps (Unix)">ps</a></li>
<li><a href="Time_(Unix)" title="Time (Unix)">time</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">User environment</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Env" title="Env">env</a></li>
<li><a href="Exit_(command)" title="Exit (command)">exit</a></li>
<li><a href="Logname" title="Logname">logname</a></li>
<li><a href="Mesg" title="Mesg">mesg</a></li>
<li><a href="Talk_(software)" title="Talk (software)">talk</a></li>
<li><a href="Tput" title="Tput">tput</a></li>
<li><a href="Uname" title="Uname">uname</a></li>
<li><a href="Who_(Unix)" title="Who (Unix)">who</a></li>
<li><a href="Write_(Unix)" title="Write (Unix)">write</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Text processing</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="AWK" title="AWK">awk</a></li>
<li><a href="Basename" title="Basename">basename</a></li>
<li><a href="Comm" title="Comm">comm</a></li>
<li><a href="Csplit" title="Csplit">csplit</a></li>
<li><a href="Cut_(Unix)" title="Cut (Unix)">cut</a></li>
<li><a href="Diff" title="Diff">diff</a></li>
<li><a href="Dirname" title="Dirname">dirname</a></li>
<li><a href="Ed_(text_editor)" class="mw-redirect" title="Ed (text editor)">ed</a></li>
<li><a href="Ex_(text_editor)" title="Ex (text editor)">ex</a></li>
<li><a href="Fold_(Unix)" title="Fold (Unix)">fold</a></li>
<li><a href="Head_(Unix)" title="Head (Unix)">head</a></li>
<li><a href="Iconv" title="Iconv">iconv</a></li>
<li><a href="Join_(Unix)" title="Join (Unix)">join</a></li>
<li><a href="M4_(computer_language)" title="M4 (computer language)">m4</a></li>
<li><a href="More_(command)" title="More (command)">more</a></li>
<li><a href="Nl_(Unix)" title="Nl (Unix)">nl</a></li>
<li><a href="Paste_(Unix)" title="Paste (Unix)">paste</a></li>
<li><a href="Patch_(Unix)" title="Patch (Unix)">patch</a></li>
<li><a href="Printf_(Unix)" title="Printf (Unix)">printf</a></li>
<li><a href="Read_(Unix)" title="Read (Unix)">read</a></li>
<li><a href="Sed" title="Sed">sed</a></li>
<li><a href="Sort_(Unix)" title="Sort (Unix)">sort</a></li>
<li><a href="Strings_(Unix)" title="Strings (Unix)">strings</a></li>
<li><a href="Tail_(Unix)" title="Tail (Unix)">tail</a></li>
<li><a href="Tr_(Unix)" title="Tr (Unix)">tr</a></li>
<li><a href="Troff" title="Troff">troff</a></li>
<li><a href="Uniq" title="Uniq">uniq</a></li>
<li><a href="Vi_(text_editor)" title="Vi (text editor)">vi</a></li>
<li><a href="Wc_(Unix)" title="Wc (Unix)">wc</a></li>
<li><a href="Xargs" title="Xargs">xargs</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Shell_builtin" title="Shell builtin">Shell builtins</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Alias_(command)" title="Alias (command)">alias</a></li>
<li><a href="Cd_(command)" title="Cd (command)">cd</a></li>
<li><a href="Echo_(command)" title="Echo (command)">echo</a></li>
<li><a href="Test_(Unix)" title="Test (Unix)">test</a></li>
<li><a href="Environment_variable#unset_command" title="Environment variable">unset</a></li>
<li><a href="Wait_(command)" title="Wait (command)">wait</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Searching</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Find_(Unix)" title="Find (Unix)">find</a></li>
<li><a href="Grep" title="Grep">grep</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Documentation</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Man_page" title="Man page">man</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="Software_development" title="Software development">Software development</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Ar_(Unix)" title="Ar (Unix)">ar</a></li>
<li><a href="Ctags" title="Ctags">ctags</a></li>
<li><a href="Lex_(software)" title="Lex (software)">lex</a></li>
<li><a href="Make_(software)" title="Make (software)">make</a></li>
<li><a href="Nm_(Unix)" title="Nm (Unix)">nm</a></li>
<li><a href="Strip_(Unix)" title="Strip (Unix)">strip</a></li>
<li><a href="Yacc" title="Yacc">yacc</a></li></ul>
</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Miscellaneous</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">
<ul><li><a href="Bc_(programming_language)" title="Bc (programming language)">bc</a></li>
<li><a href="Cal_(command)" title="Cal (command)">cal</a></li>
<li><a href="Expr" title="Expr">expr</a></li>
<li><a href="System_V_printing_system" title="System V printing system">lp</a></li>
<li><a href="Od_(Unix)" title="Od (Unix)">od</a></li>
<li><a href="Sleep_(command)" title="Sleep (command)">sleep</a></li>
<li><a href="True_and_false_(commands)" title="True and false (commands)">true and false</a></li></ul>
</div></td></tr><tr><td class="navbox-abovebelow hlist" colspan="2"><div>
<ul><li><span class="noviewer" typeof="mw:File"><span title="Category"></span></span> <b>Categories</b>
<ul><li>Standard Unix programs</li>
<li>Unix SUS2008 utilities</li></ul></li>
<li><span class="noviewer" typeof="mw:File"><span title="List-Class article"></span></span> <b><a href="List_of_POSIX_commands" title="List of POSIX commands">List</a></b></li></ul>
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