I'm running a script that performs a command that lasts too long, so I want to interrupt it. Any help? I've tried to search a lot, and I've been pointed to the kill command. Although, I can't get it to work. By the way, I'm using a Mac OS X. Thanks!
Assuming you have the process' PID, send it a SIGINT signal:
kill -SIGINT PID
If you don't have the PID you can try pkill or killall, but they're somewhat less safe; a PID is the only way to uniquely identify a process. Right after you spawn the other process the PID should be in $!, so you can save it then
process-that-takes-a-long-time &
pid=$!
# other stuff
kill -SIGINT $pid
timeout 10 your_command
To replicate Linux Ctrl+C on a terminal on Mac OS X, use ctrl+C!
Its the same keystroke combination
Worked for me (first Steps on Mac)
edit: I didnt read the script is running in background.
Related
I am working with a Raspberry Pi running linux, and have modified the .bash_profile file in order to a run a program I've made automatically upon login. This works great, but I was wondering how to turn the program off, since for ctrl+c I would need to be running the program in the terminal.
You can use Kill to terminate program by its process Id, Top command will list all the processes, You can also use Pkill, which will Terminate the process by its name.
-9 option forces process to shut down, so its very commonly used.
Example:
kill -9 "Process ID without Quotation marks"
pkill -9 "Name with Quotation marks (Case Sensitive)"
Check this.
I always use
pkill - f processname
I am unable to kill a process using kill command in Linux. And i cannot use Kill -9 to kill the process. can any one please help.
It state is most probably D then, the only state in which kill -9 won't work. Most of the time the only fix is remount the filesystem or reboot.
You can kill the running processes in linux by using kill -9 processId provided that you have right privileges to stop the process. Provide more information if you need more help.
I need to kill a process using the same command in both sh and bash (In a script). Normally I would do the following in bash:
SCRIPT=$(basename $0) #So the script knows itself
killall -9 $SCRIPT #Kill itself
However this does not seem to work using SH
Any suggestions on a solution that will work in either.
Is there an easier or more correct way to completely exit a script. Seems I have revisited this question many times over the years and never found the official correct way.
Basically to let the script kill itself, point it to $$ which presents the process ID of the shell.
kill "$$"
Avoid SIGKILL (9) when not necessary. Only use it on applications that get significantly unresponsive.
The default signal sent is SIGTERM (15), and there are other signals that could also terminate the process which may be safer than SIGKILL. One of those are SIGQUIT, SIGABRT, and SIGHUP.
On a linux box, I have at most 3 java jars files running. How do I quickly kill all 3 with one command?
Usually I would:
ps ex - get the processes running
then find the process ids then do:
kill -9 #### #### ####
Any way to shorten this process? My eyes hurts from squinting to find the process ids.
My script does the following:
nohup ./start-gossip &
nohup ./start &
nohup ./start-admin &
Is there a way to get the process ids of each without looking it up?
Short answer:
pkill java
This looks up a process (or processes) to kill by name. This will find any other java processes too, so be careful. It also accepts -9, but you should avoid using -9 unless something is really broken.
EDIT:
Based on updates, you may be able to specify the script names to pkill as well (I'm not positive). But, the more traditional way to handle this issue is to leave pid files around. After you start a new process and background it, its pid is available in $!. If you write that pid to a file, then it's easy to check if the process is still running and kill just the processes you mean to. There is some chance that the pid will be reused, however.
You can save the PIDs when you start the processes so you can use them later:
nohup ./start-gossip &
START_GOSSIP_PID=$!
nohup ./start &
START_PID=$!
nohup ./start-admin &
START_ADMIN_PID=$!
...
kill -9 $START_GOSSIP_PID
kill -9 $START_PID
kill -9 $START_ADMIN_PID
This has the advantage (over pkill) of not killing off any other processes that coincidentally have similar names. If you don't want to perform the kill operation from the script itself, but just want to have the PIDs handy, write them to a file (from the script):
echo $START_GOSSIP_PID > /some/path/start_gossip.pid
Or even just do this when you launch the process, rather than saving the PID to a variable:
nohup ./start-gossip &
echo $! > /some/path/start_gossip.pid
To get the process id of that java process run
netstat -tuplen
Process ID (PID) of that process whom you want to kill and run
kill -9 PID
I have a script (runcx) that starts two programs (cxLog and cx). I wish to be able to kill the whole mess, so I created a script:
50:/root # cat stop
killall runcx
killall cx
killall cxLog
But it doesn't work:
50:/root # ./stop
: no process killed
: no process killed
: no process killed
whereas individual commands do:
50:/root # killall runcx
50:/root # killall cx
killall: Could not kill pid '256': No such process
50:/root #
(cx is using threads, and pid '256' apparently disappeared when its parent process was killed)
What's going on here? How can I get my programs killed without all the typing?
The environment is Linux kernel 2.4.26 and a rather old version of busybox.
I figured this out after typing all the above but before hitting the post button. I had created script "stop" on a PC using vim, and the default file format is dos. Thus, killall was trying to kill programs named "runcx^M", "cx^M", and "cxLog^M". I removed the ^Ms and the script worked much better!