This is my makefile:
start:
emulator -avd Galaxy_Nexus_API_28 -writable-system &
charles &
remount:
adb -s emulator-5554 wait-for-device root
adb -s emulator-5554 wait-for-device shell mount -o rw,remount /
adb -s emulator-5554 wait-for-device shell mount -o rw,remount /sys
stop:
kill -9 $(ps -A | grep qemu-system-x86 | awk '{print $1}') &
kill -9 $(ps -A | grep charles.jar | awk '{print $1}') &
test:
ps -A | grep qemu-system-x86
Starting the android AVD and Charles works fine. Then when I run make stop --just-print I get this as output:
kill -9 &
kill -9 &
I guess this means the output of $(ps -A | grep qemu-system-x86 | awk '{print $1}') is empty. This is weird because of two reasons:
First because when I run make test I get the following (correct) output:
ps -A | grep qemu-system-x86
64434 pts/0 00:00:59 qemu-system-x86
Second, because running echo $(ps -A | grep qemu-system-x86 | awk '{print $1}') in the terminal nicely prints the correct pid of the process. So the ps | grep command works in the makefile, but the awk print addition only works in the terminal. How can this be? And how do I fix it?
For now I'm going to stick to using killall -9 java upon calling make stop but this is of course not the nicest way to handle things.
Suggesting to try simplify stop target with pkill commands.
Like this:
stop:
pkill -9 -f qemu-system-x86
pkill -9 -f charles.jar
This solution also solve the problem of killing the grep or awk command containing the target pattern instead of killing the target process command.
Related
I want to set highest I/O priority using ionice for processes with specific name (farmer and harvest)
Please help check what is wrong with my script it's not working
sudo ionice -c 1 -n 0 -p $(ps -ef | grep farmer | awk '{print $2}')
sudo ionice -c 1 -n 0 -p $(ps -ef | grep harvest | awk '{print $2}')
I got the error "ionice: ioprio_set failed: No such process" even though these processes exist
Use pgrep.
sudo ionice -c 1 -n 0 -p $(pgrep farmer)
sudo ionice -c 1 -n 0 -p $(pgrep harvest)
I was working on a project "make a task manager in linux" at school
I used ps -u [username] -o stat,cmd --sort=-pid | awk '{print $2$3$4}' command to get cmd names from the ps command
If I use this command, I see the part of the result like this :
awk{print$2$3$4}
ps-u[username]
when I try to terminate those process using the pid of each process, it won't terminate them because their PID doesn't exist.
How could I not show those awk{print$2$3$4} and ps-u[username] ???
I couldn't think of any idea
ps -u [username] -o stat,cmd --sort=-pid | awk '{print $2$3$4}'
You can't kill them because they were only alive while the commands were running, which was the same command you used to generate that output.
There's a few ways you can suppress these. I think the easiest would be to filter them out in your awk script.:
ps -u [username] -o stat,cmd --sort=-pid | awk '$2!="awk" && $2!="ps"{print $2$3$4}'
JNevill's solution excludes every running awk or ps process. I think it's better to exclude processes on tty. Also, you aren't getting complete commands with how you use awk. I (kind of) solved it using sed.
$ ps -u $USER -o stat,tty,cmd --sort=-pid | grep -v `ps -h -o tty $$` | sed -r 's/.* (.*)$/\1/'
You can test it with the following command. I opened man ps in another terminal.
$ ps -u $USER -o stat,tty,cmd --sort=-pid | grep -v `ps -h -o tty $$` | grep -E '(ps|grep)'
S+ pts/14 man ps
The downside is, besides excluding ps and grep, it excludes your application as well.
I want to kill process on remote machines via ssh but its not working
VAR=$(ssh ${HOSTS} ps -ef | grep $SERVICE | grep -v grep | awk '{print $2}' | xargs kill -9)
ssh ${HOSTS} ps ef < /dev/null > /dev/null 2> /dev/null
The problem is that your pipe process get execute on your local host rather than on the server.
A solution is to quote protect the command:
VAR=$(ssh ${HOSTS} "ps -ef | grep $SERVICE | grep -v grep | awk '{print \$2}' | xargs kill -9")
ssh ${HOSTS} "ps ef" < /dev/null > /dev/null 2> /dev/null
Below command worked well for me to kill processes on remove server.
I'm able to kill tail command running on remote server.
ssh -tty ${Host}" ps -efwww | grep tail |grep -v grep |cut -c 10-15|xargs kill -9 "
I want to kill process through shell scripting it is giving me error. Here is what i tried so far:
When i try to kill memcache it give me error like "kill: No such process" , i used below command:
ps -ef | grep "memcache" | awk '{print $2}' | xargs kill;
or if try like below:
kill -9 $(pidof memcache)
i get error like below:": arguments must be process or job IDs"
When i run directly on command prompt process is running:
ring#ubuntu:~/parasol$ ps aux | grep memcache
memcache 873 0.0 0.0 323220 1188 ? Sl 22:56 0:00 /usr/bin/memcached -m 64 -p 11211 -u memcache -l 127.0.0.1
ring 1714 0.0 0.0 9384 920 pts/0 S+ 23:45 0:00 grep --color=auto memcache
I reff to https://askubuntu.com/questions/239923/shell-script-to-9-kill-based-on-name
AND
Shell script to capture Process ID and kill it if exist
My Ubuntu Version:
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04.2 LTS"
NAME="Ubuntu"
VERSION="12.04.2 LTS, Precise Pangolin"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu precise (12.04.2 LTS)"
VERSION_ID="12.04"
Acutally
ps -ef | grep memcache
will give two lines..
so you can go this way
ps -ef | grep memcache | grep -v "grep" | awk '{print $2}' | xargs kill;
This can get you exact one PID
if I has to do I would break it in 2 lines in start
#!/bin/bash
PID=`ps -ef | grep memcache | grep -v "grep" | awk '{print $2}'`
echo $PID
#to check PID is right
kill -9 $PID
save it in scrip files say test.sh
then on terminal
chmod +x test.sh
then
./test.sh
You can use these commands:
pkill memcached
or
pgrep memcached | xargs kill -9
or
killall memcached.
pgrep, pkill - look up or signal processes based on name and other attributes.
Your first command might be killing itself before having chance to kill the target processes.
For a reliable way, run pkill /usr/bin/memcached or pkill -9 /usr/bin/memcached although the latter is a bad practice.
For the first command, you see that there are two processes that matches the pattern you grep for. The actual memcached process and your grep process. That is probably the reason for the error of the first command line.
Try narrowing the search down, for example by grepping for e.g. "^memcache.*/usr/bin/memcached".
The problem with the second error is that you're calling pidof with the username instead of the process name, so the command is essentially kill -9 without any process id. Try instead e.g. pidof memcached to get the process id of the correct process.
ps -ef | grep "memcache" | awk '{print $2}' | xargs kill;
PID=`ps -ef | grep memcache | grep -v "grep" | awk '{print $2}'`
#...
First, you could use cut instead of awk in this case. No need to use a tank to kill a fly ;)
Then, why is it necessary to brutally kill memcache? You have a daemon to stop it :
/etc/init.d/memcached stop
service memcached stop
I am writing a script using Fabric which needs to terminate a process remotely.
(this means that the command ends up getting executed as /bin/bash command)
The current code I have is the following:
in a kill.sh file i have
/bin/kill $(ps -ef | grep multiserver.jar | grep -v bin/sh | grep -v /bin/bash | grep -v sh | grep python | grep -v /usr/bin/java | grep -v /usr/bin/python | grep -v sh | awk '{print $2}')
which I run in Fabric on my remote host using the following commands
local("scp " + "kill.sh " + user +"#" + server_address + ":" + directory)
run ("chmod u+x kill.sh")
run("./kill.sh")
However I get the following error message
out: Usage:
[] out: kill [options] <pid> [...]
Fatal error: run() received nonzero return code 1 while executing!
Requested: ./kill.sh
Executed: /bin/bash -l -c "cd ... && ./kill.sh"
Does anyone know what I am doing wrong?
While solving this issue with reading logs with fabric, I wrote command to kill remote processes:
with settings(warn_only=True):
sudo("kill -9 `ps aux | <pipeline of greps> | awk '{print $2}'`")
Hope this helps.