I ran an ssh command doing the following: ssh user#remote "my command &". Now the process seems to be running in the background, but I cannot find it, and I want to end it. I've used netstat, but cannot find the process.
Didn't you expect it to run in the background? Thats what the & does. You can use ps af to show all of the processes running under your username. You can then kill it by PID.
Thanks everybody. I found the process doing ps aux. For some reason, the port that it was using wasn't being display in netstat.
I suggest some methods
sudo killall ssh
It may not be the best method to use this method, it is better to filter first and then close it
or
ps -o pid,cmd | grep ssh
kill -QUIT (pid)
To stop a program, send the QUIT signal.
Related
In my application, I use concurrently to run both backend and front end simultaneously. After ctrl + c, strill the port 5000 is running. Also, port 3000 is running. I have to manually kill processes. How can I solve this?
Run cmd.exe as 'Administrator':
C:\Windows\System32>taskkill /F /IM node.exe
run pa -xa | grep node
you will get result with processid
4476 pts/0 Sl+ 0:01 node index.js
then kill the process with kill -9 4476
as simple as that
lsof -ti finds open files(sockets are files in nix based systems) -t removes the headers, so that we can pipe into kill(We just want the process id), -i lets lsof find the file based off the internet address. We do not have to provide the full address, we can just search by port, by using the pattern :port.
Some commands accept input from stdin, and we can pipe directly to them, kill is not one of those commands, so we must use xargs(It reads from stdin, and calls the specified command with the input from stdin).
Finally the ; lets us execute both commands irrespective of one another. Regardless of whether lsof -ti:3000 | xargs kill succeeds or fails,
lsof -ti:5000 | xargs kill will run, and vice versa.
lsof -ti:3000 | xargs kill; lsof -ti:5000 | xargs kill
Restart your laptop/server, it will release all the busy ports, then try again... you can also use
ps aux | grep node
and then kill the process using:
kill -9 PID..
You can kill all the processes that are using node it can also kill a system process
Not preferred: killall -9 node
but most of the times it wont work for nodemon, and didnt work for me.
You can fix this issue by killing the address in use or may simply restart your device.
1- For Linux to Kill the address in use, use the following command
sudo kill $(sudo lsof -t -i:8080)
where replace 8080 with your app address.
you can simply restart your laptop or change the port number it should work
I'm running the following command in Linux:
sudo ./tftpCommand &
where my executable tftpCommand file simply gets/puts a data file which sometimes does not exist.
I want to be able to stop the tftp command that was spawned in the subshell before it automatically times out.
Using something like kill $(jobs -p) shows that the subshell has been terminated but the tftp still runs -- I know this because several seconds later it prints to the shell that it can't find the file to transfer.
QUESTION: How do I ensure that the tftp command is killed alongside the subshell that runs it?
Thanks!
I've found a solution to my problem:
use pkill -c tftp to kill any current tftp commands.
I figured this out by using ps x -o "%p %r %c"
You can use a similar technique for any of the command names in the COMMAND column (corresponding to the %c and -c ) to kill other processes.
Hope that helps anyone else who stumbles upon the same problem!
I've googled this question, but never found anything useful for my particular case.
So, what I'm trying to figure out is the PID of a certain command that is running so I can kill it if necessary. I know it's possible to get the PID of a command by typing echo $! So supposedly
my_command & echo $!
should give me the PID. But this isn't the case, and I think I know why:
My command is as follows:
screen -d -m -S Radio /path/to/folder -f frequency -r path/to/song
which opens a detached screen first and then types the command so that it gets executed and keeps on running in the background. This way the PID that echo shows me is the wrong one. I'm guessing it shows me PID of screen -d -m -S Radio /path/to/folder -f frequency -r path/to/song instead of the PID of the command run in the new terminal created by screen.
But there's another problem to it: when I run screen -ls in the terminal, the command that is running in the background doesn't show up! I'm fairly certain it's running because the Pi is constantly at 25% CPU usage (instead of the 0% or 1% usually) and when I type ps au I can actually see the command and the PID.
So now I'm calling the community: any idea on how I could find the PID of that certain command in the new terminal? I'm writing a bash script, so it has to be possible to obtain the PID through code. Perfect would be a command that stores the PID in a variable!
Thanks to #glennjackman I managed to get the PID I wanted with a simple pgrep search_word. At first it wasn't working, but somehow I made it work after some trial and error. For those wanting the PID on a variable, just type
pid=$(pgrep search_word)
Regarding the problem with screen -ls not showing my detached session, it's still not solved, but I'm not bothered with it. Thanks again for solving my problem #glennjackman !
EDIT:
Second problem solved, check the comments on berends answer.
You can easily find out all the running process and their PID by writing (for example):
ps aux
The process is run by screen so you can probably find it easier by writing:
ps aux | grep screen
For more info about ps and the parameters I used check (quick google) -> https://www.lifewire.com/g00/uses-of-linux-ps-command-4058715?i10c
EDIT: You can use this command with bash scripting as well.
There is a benchmarking process, which should be run on a system. It takes maybe a day, so I would like to run it nohup. I use this command:
nohup bash ./run_terasort.sh > terasort.out 2>&1 &
After that I can see with PID in jobs -l output, but after closing PuTTy it stops(as I can see, when I login again).
This is a KVM virtualized machine.
You are using nohup right from what I know. But you have an issue detecting the process.
jobs -l only give the processes of current session. Rather try the below to display the process started in your initial session:
ps -eafww|grep run_terasort.sh|grep -v grep
I run a few processes that I created myself on my Ubuntu Server, and to kill them I run:
sudo fuser -n tcp PORT
kill -9 PID-DISPLAYED
Is there any way I can obtain the PID from a port using a shell script, then kill it by running the shell script.
Thanks.
fuser can kill it:
-k, --kill
Kill processes accessing the file. Unless changed
with -SIGNAL, SIGKILL is sent. An fuser process
never kills itself, but may kill other fuser processes.
The effective user ID of the process executing fuser is
set to its real user ID before attempting to kill.
Try using either killall, or pkill, either of which will close all processes of the type of argument you describe, for example:
killall firefox
Will kill all running instances of firefox.
See
this link of pkill.