Questions tagged [lsof]
lsof is a tool to list open files of processes
231 questions
4
votes
2
answers
495
views
how to tell, from the outside, if the output stream of a process has been closed?
Suppose you have this script, on an Ubuntu machine:
#!/bin/env python3
import sys
import time
try:
i = 1
while True:
print(i)
i += 1
except Exception as e:
sys.stderr.write(f"We ...
- 775
0
votes
2
answers
115
views
Killing a process PID starts a new process instead
I have a running process on localhost on port 5000. I have tried kill - 9 <PID> which it works for that PID but it starts a new process with a new PID instead. What's the issue here?
I'll put ...
- 11
0
votes
1
answer
59
views
Detecting outbound mail
My VMs IPv6 address occasionally get on a blocklist. Their "evidence" is that they claim something is making outbound connections to port 25 and issuing an EHLO of an IP address, not a ...
- 169
0
votes
0
answers
57
views
ps ax and -o fd
According to ps(1), ps doesn't support fd.
even I didn't find fd in task_struct of kernel.
How can I find fd of a program?
َUPDATE:
FD means File Descriptor.
When I get query from services such as :
...
- 11.3k
0
votes
1
answer
34
views
freeciv in lsof output
I'm working an issue with ZeroMQ using XSub-XPub. I did lsof on bind in port and see:
lsof -i :5556
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
python 475590 codespace 45u IPv4 ...
- 141
0
votes
1
answer
236
views
Hundreds of strange connections in iftop
OS is Debian. I'm running nginx as a webserver. I am not running Wordpress. Logging is enabled in the http block with:
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
...
- 167
0
votes
2
answers
319
views
Process called lsof using too much CPU
I keep having
lsof -w -l +d /var/lib/php5
eating up my CPU
I want to know who is triggering it and what does it have with php5 ...
- 109
0
votes
0
answers
73
views
Very large discrepancy between du and df
OS is Debian. I have a few systems that seem to not be freeing disk space correctly.
On a normal system:
du --max-depth 1 / --exclude=/proc -h -x
Seems to almost exactly agree with:
df -h /
ie, ~800 ...
- 167
2
votes
2
answers
411
views
Finding the processes trying to open some FIFO
In my example, the wc program is trying to open the test FIFO or named pipe.
These in-progress open syscalls seem not to be shown by fuser or lsof:
mknod /tmp/testpipe p
wc /tmp/testpipe &
timeout ...
- 754
1
vote
1
answer
337
views
Why ss show a port is in use but lsof doesn't?
When I use ss (socket statistics) to show the usages of port 5432 I get:
$ sudo ss -ln | grep -E 'State|5432'
Netid State Recv-Q Send-Q Local Address:Port Peer Address:...
- 111
4
votes
1
answer
156
views
lsof output file descriptor with asterisk not documented
When I run lsof I see the output
java 1752736 user 9995u sock 0,8 0t0 1432559505 protocol: TCPv6
java 1752736 ...
- 398
0
votes
1
answer
671
views
fuser -v /dev/nvidia* and lsof not responding
On our A100 machine, we frequently have zombie processes that still allocate memory when already stopped. I usually used fuser -v /dev/nvidia* to determine the PIDs of all processes and kill them ...
- 331
2
votes
1
answer
256
views
Have lsof take action if a process has a file open — and, ideally, do so repeatedly
Per the EXAMPLES section in the lsof(8) man page
on manpages.ubuntu.com,
I should be able to run a command/take action if a process has a file open:
To take action only if a process has /u/abe/foo ...
- 306
0
votes
1
answer
239
views
How can I find out what so_type an existing unix socket has in macOS?
In linux we can run ss -x or lsof -U +E and we can see what type unix socket has. But in macOS there is no ss or we can run lsof -U which only shows TYPE - unix, but I would like to know with some ...
- 103
0
votes
1
answer
535
views
how can I list, with lsof command, TCP Established connections ignoring localhost?
Using lsof command I would like to print out TCP connections with ESTABLISHED state but ignoring the ones with localhost.
I tried:
lsof -itcp@^127.0.0.1 -stcp:established
lsof -itcp@(^127.0.0.1) -stcp:...
- 103