How do you stop delve headless debugger?
Note: I am runningthis from a docker container on mac, and installed like this:
go get -u github.com/derekparker/delve/cmd/dlv
From this it starts ok, but how do you stop it again.
dlv debug --headless --listen=:2345
ctrl + c etc. do not work - any special trick?
use kill -SIGINT $PID
delve will ignore SIGINT in headless mode
Related
I am currently network booting a Raspberry Pi and using Openbox I autostart chromium, is it possible that if a user presses close or minimise I can programatically restart chromium in the background?
You can use a shell command to restart the command as soon as it finishes.
Assuming your openbox config for autostarting stuff lets you put in shell snippets you can use
while true; do
chromium
done
If you have to specify just one command in your openbox config you can wrap that in a string to hand to sh:
sh -c 'while true; do chromium; done'
Or you could put it in a script and make that executable (chmod +x my-script-file.sh):
#!/bin/sh
while true; do
chromium
done
and then tell openbox to autostart the my-script-file.sh.
I have some utility scripts that copy text to my clipboard using pyperclip (python library).
When I use vscode in ssh mode to develop on my remote server, I want to still be able to run these scripts in the integrated terminal of the remote server, but make it copy text to my local clipboard.
I suspect there might be a way to do this, since running code <dirname> in the remote terminal, for example, opens a vscode window in my local machine, so I assume there's a way to intercept the commands to make them do something locally even if they run on the remote machine. Any suggestions?
xsel might help you.
I'm trying to get a similar result using a dev container, although I could use some help myself. My problem is that I can't configure X11 forwarding. If you can set that up, then the following might move you forward a bit:
copy-to-clipboard-file() {
[[ "$REGION_ACTIVE" -ne 0 ]] && zle copy-region-as-kill
print -rn -- $CUTBUFFER > xsel --clipboard
}
zle -N copy-to-clipboard-file
bindkey "^X" copy-to-clipboard-file
I don't know if zle is available in your shell; I'm using zsh. This binds Ctrl-X to copy the selected text. You'll need to install xsel.
You'll know if X11 forwarding is working because this will output something:
echo $DISPLAY
Also see:
How do I highlight text for copying and pasting in the VS Code terminal?
I am following some tutorials on how to work with Mongodb but they don't explain how to close the CLI. I usually just use "exit" but after running mongod it now does nothing, and if I try to leave by just closing the window I get a message saying "processes running in session".
I get the same problem with the other gitbash window after running npm run dev (I think the "dev" part is just specific to what I do now?).
Normally you can press 'ctrl' + 'c' on your keyboard and it should stop the process running on your command line tool.
Have a look here thing might be more MongoDB specific help
https://stackoverflow.com/a/11776728/4389143
The command to save a file in Vim and quit the editor is :wq . To save the file and exit the editor simultaneously, press Esc to switch to normal mode, type :wq and hit Enter .
Check this.
I am trying to write a python script which runs on another server such that even if I close my server connection on my PC's terminal it keeps on running on that server.When the script is kept alive, it runs infinitely listening to any events on a Website (UI), on event occurrence it then starts up certain dockers appropriately and keeps on listening to PosgreSQL Events.
When I tried to use nohup (to run the script in background) it did run in the background but was unable to listen to any of the events. Has any one worked on something similar before? Please share your thoughts.
I am sharing a part of my script.
self.pool = await asyncpg.create_pool(user='alg_user',password='algy',database='alg',host='brain',port=6543)
async with self.pool.acquire() as conn:
def enqueue_listener(*args):
self.queue.put_nowait(args)
await conn.add_listener('task_created', enqueue_listener)
print("Added the listener")
while True:
print("---- Listening for new job ----")
conn2, pid, channel, payload = await self.queue.get()
x = re.sub("[^\w]", " ", payload).split()
print(x)
if x[5] == '1':
tsk = 'TASK_ID=%s' % str(x[1])
if x[3] == '1':
command = "docker run --rm -it -e ALGORITHM_ID=1 -e TASK_ID=%s --network project_default project/docked_prol:1.0" % (str(x[1]))
subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
if x[3] == '8':
command = "docker run --rm -it -e ALGORITHM_ID=8 -e TASK_ID=%s --network project_default project/docked_pro:1.0" % (str(x[1]))
subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
The script is running absolutely fine when kept on running manually, but just need some advice with implementation methodology.
First of all, I am here after 3 years later.
To run a script infinitely as a background task, you need process manager tools. PM2 is my favorite process manager tool made in nodejs but can run any terminal task because it is a CLI.
Basically, you can install NodeJs and npm to reach pm2. (You can visit NodeJs.org to download the installer.)
You need to install the pm2 as a global module using npm install -g pm2 on your terminal
You can check if it is installed simply by pm2 -v
Then you can start your python script on your terminal using pm2 start file_name.py
It will create a thread in background to run your script and it will be restart forever.
If you were doing something that takes so much time and you dont want to see the task running on the terminal you can just disable restarting by adding the parameter --no-autorestart into the command. (# pm2 start file_name.py --no-autorestart)
If you want to see the logs or the state of the task, you can just use pm2 status, pm2 logs and pm2 monit.
If you want to stop the task, you can use pm2 stop task_name
You can use pm2 reload all or pm2 update to start all the tasks back
You can kill the task using pm2 kill
For more information you can visit PM2 Python Documentation
Running something in background via nohup will only work if the process/script runs automatically without providing external inputs, because there is no way to provide manual inputs to a background process.
First, try checking if the process is still running in background (ps -fe|grep processname).
If its running, then check the 'nohup.out' file to see where the process is getting stuck. This gets generated in the same directory where you started the process. This will give you some idea what is going on inside the process.
I used QEMU to bring CentOS.img (downloaded some where). I find the boot screen of CentOS.img took over the console session of the current terminal and I could see CentOS booting up process and prompts me to the login screen of the guestVM CentOS. This is really helpful for me as I ran QEMU instance from remote console machine.
Now, I created a new RHEL.img using iso and when I try to boot it; I was not able to see anything in the screen other then some symbol of (Y) :(
$>/usr/libexec/qemu-kvm -hda ./RHEL.img -bios bios.bin -nographic -net nic,model=e1000,macaddr=00:AD:BE:EF:4F:BD -net tap,script=./qemu-ifup -m 1024 -smp 2
...Y
on investigation, I find we can do it by redirecting RHEL boot to console using
# virt-edit RHEL_VM /boot/grub/grub.conf
...
title rhel (2.6.38.6-26.rc1.fc15.x86_64)
root (hd0,0)
kernel /vmlinuz ro [...] console=ttyS0
...
but nothing worked out. I am trying to bring the rhel VM session to the same console where I invoked qemu-kvm from remote terminal. Thanks in advance.
NOTE: I don't have GUI enabled on the physical host machine.
You could try adding a serial port and sending output to that. Although you do have to be able to boot it at least once to do these steps...
You might get lucky if you just add a serial port to the qemu command line and then telnet to that; hoping linux detects this and sends output there
edit /etc/init/ttyS0.conf and add
respawn
console none
start on (local-filesystems)
stop on [!12345]
script
exec start ttyS0
end script
then
ln -s /etc/init/ttyS0.conf /etc/rc2.d/S99ttyS0.conf
ln -s /etc/init/ttyS0.conf /etc/rc0.d/S99ttyS0.conf
ln -s /etc/init/ttyS0.conf /etc/rc6.d/S99ttyS0.conf
then do this to enable grub
Edit /etc/default/grub
1. Edit the GRUB_CMDLINE_DEFAULT="" line to start the console on /dev/ttyS0
GRUB_CMDLINE_LINUX_DEFAULT="console=tty0 console=ttyS0,38400n8"
2. Add a serial console section
# Serial console
GRUB_TERMINAL=serial
GRUB_SERIAL_COMMAND="serial --speed=38400 --unit=0 --word=8 --parity=no --stop=1"
3. Rebuild the grub.cfg file
sudo sh
grub-mkconfig > /boot/grub/grub.cfg