lsof is a tool to list open files of processes

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File limits getrlimit(RLIMIT_NOFILE) failed

(32-bit system) Posted a Q/A earlier regarding Chrome crashing because of exhausted limit in open files. Chrome has since run more smooth, (after increasing limit), but still crashes from time to ...
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Best way to free disk space from deleted files that are held open

Hi I have many files that have been deleted but for some reason the disk space associated with the deleted files is unable to be utilized until I explicitly kill the process for the file taking the ...
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3answers
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How do I detect running processes using a library package?

This command is doing the rounds for detecting currently running processes using glibc: lsof | grep libc | awk '{print $2}' | sort | uniq I find it intensely annoying, since /libc/ matches not only ...
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Different output of lsof variant [closed]

I have a Java application utilizing the MongoDB Java driver (2.11.3). I'm using one static MongoClient instance across the whole application and as stated in the docs it should handle the connection ...
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lsof misses files

Why does lsof fail to list files I have open. For example I open with the text editor some file in my home directory. $ gedit ~/.python_history lsof does not even work as root $ sudo lsof | grep ...
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Why doesn't syslog traffic show up in netstat and lsof output?

I've noticed on my CentOS 5.x system that outbound syslog traffic (UDP) doesn't show up in lsof or netstat results. I've even tried stuff like watch -n .1 'netstat -l -u -n --program' to make sure ...
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929 views

how to get the stream URL of flash radio

I am listening to a radio stream (flash content in a browser). I want to play this stream directly with mplayer or the like. Doing lsof -ni shows me these two lines (among others): plugin-co 13248 ...
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Move file but only if it's closed

I want to move large file created by external process as soon as it's closed. Is this test command correct? if lsof "/file/name" then # file is open, don't touch it! else if [ 1 -eq ...
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Determining what process is bound to a port

I know that using the command: lsof -i TCP (or some variant of parameters with lsof) I can determine which process is bound to a particular port. This is useful say if I'm trying to start ...
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lsof: WARNING: can't stat() fuse.gvfsd-fuse file system

What exactly is happening here? root@bob-p7-1298c:/# ls -l /tmp/report.csv && lsof | grep "report.csv" -rw-r--r-- 1 mysql mysql 1430 Dec 4 12:34 /tmp/report.csv lsof: WARNING: can't stat() ...
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How do I figure out what is preventing a bind mount from unmounting?

I have a problem with a mountpoint being too busy to unmount. Normally, lsof or fuser would tell me what process is using it, but this is a bind mount, so lsof and fuser show what is using both the ...
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Failed to list directory contents: process waits infinitely

I use Linux Mint 13, and sometimes (rarely) I find myself not being able to list my home directory contents. When I try to do so: $ cd $ ls then, ls just waits indefinitely. The same with any other ...
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lsof: home folder is busy, but I never logged in as that user

I'm trying to run ecryptfs-migrate-home to encrypt my home folder, but the command keeps failing the open files check. Indeed, lsof +D "/home/will" shows the same in-use files as ...
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2answers
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How to capture the port number from this `lsof -F` output using awk (or something better)?

I've got output coming from lsof -F that looks like this: p7646 g7646 R8300 csocat u1000 Labe f3 au l tIPv4 G0x80002;0x0 d640391 o0t0 PTCP n*:51352 TST=LISTEN TQR=0 TQS=0 I am trying to capture the ...
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Alternatives for “lsof” command?

In many cases "lsof" is not installed on the machines that with I have to work, but the "function" of lsof would be needed very much (ex. on AIX). :\ Are there any "lsof" like applications in the ...
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315 views

Monitoring files continuously with lsof

Is there a way to make lsof work continuously to monitor every file that is being opened in real time? I don't know the name of the process. I want lsof to work continuously for a period of time ...
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rogue ssh (+svn?) process trying to connect to a remote server

I am using a remote server via ssh, svn, and sometimes with FileZilla all running on Mac OS 10.9.4. I connect to the server with no problems (i.e. my credentials pass every time I enter them). ...
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List only commands with lsof

I tried with lsof -F c somefile But I get p1 cinit p231 cmountall p314 cupstart-udev-br p317 cudevd Instead of init mountall ... Any way to get just the command?
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How to determine the newly closed file within a continuous audit log rotation?

I am attempting to find the best way to determine when the second file (of a matching criteria) is created. The context is an audit log rotation. Given a directory where audit logs are created every ...
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5k views

Who's got the other end of this unix socketpair?

I want to determine what process has the other end of a unix socket, that was created with socketpair(). I have a program parent which creates a socketpair(AF_UNIX, SOCK_STREAM, 0, fds), and fork()s. ...
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ls does not show a hidden file (OS X)

I am using lsof to view the list of open files. One such file that it displays open is : Google 3864 malaykeshav 46u REG 1,1 470455334 32578671 ...
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FreeBSD 10 trace disk activity

Is there any way to find some process which is periodically writing to disk (according to hdd led) on FreeBSD 10 with ZFS (maybe turn ZFS into verbose logging mode)? lsof and other instantly ...
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1k views

How can I know the process name which is opening a tcp port?

I have two linux servers. Let's say they are C and S. C is client of S On my S machine, I type. $ netstat -an | grep ESTABLISHED tcp 0 0 192.168.1.220:3306 C:57010 ...
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Limiting readers on a pipe

I want to use a pipe to pass some security credential information from "process1" to another script. I only want authorized reader processes to be permitted to read the pipe. I am thinking I will ...
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53 views

run lsof in non-interactive mode

I need to write lsof output for several network ports into bash variable. Simple $(lsof -i :5555) doesn't work - lsof waits for quit command (Ctrl-C) every time I call it. I can't figure out how to ...
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34 views

Forcing compton to free directory

I often have trouble unnounting filesystems because compton is keeping a subdirectory open. Here is one line from lsof I have right now: compton 30043 valmi cwd DIR ...
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1answer
55 views

link count of deleted files

I am reading in man lsof that +L enables the listing of file link counts. A specification of the form "+L1" will select open files that have been unlinked. I don't understand why deleted files ...
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159 views

what process is listening on a given port

I have several problems: some process is attempting to send data and the firewall is rejecting it at the rate it is sending it out firewall logs flood the system (may need to rate-limit the logging) ...
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1answer
529 views

Memcache 'stats' reports non-zero 'curr_connections' - but lsof shows no socket connections

Our memcache daemon reports non-zero 'curr_connections'... $ telnet memcache-server 11211 Escape character is '^]'. stats ... STAT curr_connections 12 ... ...and yet, lsof shows no socket ...
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understanding lsof -i output with web browsing

Sorry, if my question is nooby, but i don't understand some output lsof command. I try to run lsof -i on my home machine(debian linux) and what i obtain (showed one line; my browser chromium was ...
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lsof: show files open as read-write

When I try to remount a partition as read-only, I get an error /foo is busy. I can list all files open from /foo with lsof /foo but that does not show me whether files are open read-only or ...
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How can I figure out which pty's are from which qemu?

I'm running qemu's like this: $ sudo qemu -boot d -m 1024 \ -netdev tap,id=tap0 \ -device virtio-net-pci,netdev=tap0,id=vth0 \ -drive file=ubuntu.iso,media=cdrom,cache=none,if=ide \ -monitor pty \ ...
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root permission denied on /proc/1/exe

I just performed a fresh ubuntu install and i am seeing the following in lsof: userA@az1:~$ lsof COMMAND PID TID USER FD TYPE DEVICE SIZE/OFF NODE NAME init 1 ...
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359 views

How do I update lsof port on FreeBSD 9.2?

It threw errors about kernel sources missing. So, I looked and sure enough this box doesn't have them. The documentation I have says to install them via sysinstall. That failed both automatically ...
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lsof - debug the output information

I was going through the questions of this site. In this particular question, I see the command lsof being used to list the files that are open for a particular user. I ran the below command in my ...
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fuser vs lsof to check files in use

I've been getting some suggestions on how to figure out why my serial port is busy. Specifically, when I try to start gammu-smsd, it refuses to start on /dev/ttyS0 because it says that port is busy: ...
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794 views

When looking at lsof output, what does “0t0” mean?

When looking at lsof output, what does "0t0" mean?
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94 views

How to increase the link count for a directory, link count went to 0?

I have made myself land in this situation, it is a chrooted workspace on my system where I virtualize the entire file system ( so its not actual /var/log ) Is there a way that I can either delete this ...
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Tracking which files are used by program

I am looking for a way to track which files are used by program installer(InstallAnywhere). I cannot use lsof because as far as I know it works on active processes and I want a tool which will work ...
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Under AIX, how can I get the full path of a program bound to a port?

Under Linux I can use netstat -tulpnw and ps, like so: # netstat -tulpnw | grep :53 tcp 0 0 127.0.0.1:53 0.0.0.0:* LISTEN 1482/named udp ...
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“lsof: can't read namelist from /dev/ksyms” on Solaris

On Solaris, when I type the command lsof -l I encountered this error: lsof: can't read namelist from /dev/ksyms Anyone knows what this error means and how I can get open the list of open FD's ...
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163 views

lsof doesn't return files open by the same user

Consider this simple scenario: I open a text file ~/textfile.txt with vim in one terminal (tried with both edit and read-only modes). In a different terminal, I run /usr/sbin/lsof ~/textfile.txt ...
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3answers
405 views

How to tell if a file is being downloaded by wget?

I use wget to download files (most are zip files) automatically for me during the night. However, sometimes in the morning I find that a few files cannot be unzipped. I don't know why this is ...
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593 views

What do GDIR, GREG, VDIR, VREG mean in lsof output

The lsof manpage says the following about the TYPE column. TYPE is the type of the node associated with the file - e.g., GDIR, GREG, VDIR, VREG, etc. Can someone please explain (or point ...
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How to interpret this output of lsof command?

root@host [/home2]# lsof /home2 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME php 3182 ctxmortg cwd DIR 8,17 4096 32858196 /home2/ctxmortg/public_html/hello php ...
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1k views

What's the difference between lsof and fuser -uvm

Both shows the number of files we're using. Yet they both shows different results. root@host [~]# lsof /home4 root@host [~]# lsof /home2 root@host [~]# lsof /home4 Then we got fuser -uvm /home4 ...
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iostat report huge writes to drives that's not even mounted

root@host [~]# fsck /home2 fsck from util-linux-ng 2.17.2 e2fsck 1.41.12 (17-May-2010) /dev/sdb1: clean, 6018617/91578368 files, 54524459/366284000 blocks root@host [~]# fsck /home4 fsck from ...
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4k views

How do I monitor opened files of a process in realtime?

I know I can view the open files of a process using lsof at that moment in time on my Linux machine. However, a process can open, alter and close a file so quickly that I won't be able to see it when ...
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lsof compares to pfiles, difference?

pfiles in Solaris suspends files for a short period while examining them, however, lsof does not. How does lsof work that allows it to retrieve information while not suspending files?
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How do I get a mapping of Pid to Port?

I have a process which I need to run on a specific port. I have started some other process on that port and I need to kill it. Unfortunately, I don't remember the name/pid of the other process so I ...