I've been trying to set up a server that I want to run when I log in (in case the computer crashes or anything like that).
The script works and it runs on log in but it runs in the background or something as when I use ps -A I can see the process running. This is ok but the server is interactive so I want it to start in a terminal window and keep that window open after the user is logged in so that commands can be issued to the server. Is there a way of doing this?
What about starting your script like:
xterm -e YOURSCRIPT
Or if you prefer to use KDE's konsole:
konsole -e YOURSCRIPT
Those open a terminal window to run the specified command after -e.
HTH
Related
Does anyone know any way of doing this? The help would be greatly appreciated, I've been beating my head over this one for a while now, and I can't seem to find any way to get scripts to auto-start and display in the foreground as they would if I had manually started them.
what i want to do is basically just power on the vm, let it boot, then watch the script run and echo results to the console or whatever the script would normally display if ran manually
I've been able to use Cron and systemd to run the script I would like to run at startup, but I cannot figure out any way to get these scripts to run in the screen, as they would if I had typed ./startup_script.sh
i am currently testing everything in a headless Debian 11 vm. Auto login as root is already enabled. i just need to complete this last step but i don't know how to do.
You can fire up a tmux session and send keys it to start a script like this:
tsid="session_name"
my_script="/home/script.sh"
# create new tmux session
tmux new-session -d -s ${tsid}
# launch the script in the tmux session
echo "launching script in a tmux session called ${tsid}"
tmux send-keys -t ${tsid} "${$my_script}" 'C-m'
I do something similar to start a "quad-pane" to my raspberry pi devices. I can send commands to each pane via ssh without looking at the screen I am sending commands to. I can send commands to the panes from any ssh session without actually connecting to a gui, or being in the "session". This way, another machine can have that session up on a monitoring display and I can momentarily ssh over a command to the host and it will show over there without ever actually connecting to the window. The panes can run scripts and and have the output on the each respective screen/pane waiting for me to connect later and look at it. Every now and then I'll pull up my quad feed to see what's happening... then disconnect and leave it all running.
# function to send an arbitrary command to a tmux pane
# arg1: full id of pane, e.g. "pi4-host01:quad-feed.0"
# arg2+ command(s) to send to pane
tmux_send_command_to_pane_id() {
local tpid cmd
tpid="${1:-0}"
cmd="${#}"
echo "cmd to send to pane: ${tpid}: ${cmd}"
tmux send-keys -t "${tpid}" "${cmd}" 'C-m'
}
If you pair something like this with cron or systemd, i'd imagine you could get to your goal relatively quick. It does depend on installing tmux. I know others use screen, but I have become a fan of tmux for whatever reason.
A nice answer on systemd scripts here -> https://unix.stackexchange.com/a/47715/376937
Here is another question that may help as well:
Tmux command to run shell command on active pane?
Im trying to execute a program with xterm and then close xterm with program running but it seems this doesn't work like I would expect it.
In bash there is the option bash -c [command] is there something in xterm too?
Currently im using xterm -e [command] but this keeps the xterm window open till' my program has finished. But I want to open it, run the program, close it and keep the program running.
Is there a way to do it?
I do it (from a bash file) like:
my#self:~$ cat /usr/bin/rdesk.sh
#!/bin/bash
xterm -e 'perl /home/my/script.pl'
when i run the rdesk.sh file it starts xterm with a perl script, giving me some options. after choosing one, I can close the window, running the chosen program.
So you might just have to put your xterm -e ... command into a bash script.
I have tried everything to make this work. login scripts, LXDE-pi autostart, cron task #reboot, init.d, and I cannot get my script running with a terminal window running in the foreground so that I can interact with it. I can get it to run but only in background. Is there any way I can get a script that simply runs: "python /home/pi/myscript.py" at startup and leaves the terminal window open with the script running for my keyboard inputs? I would rather not use the /dev/input/event if at all possible. Thanks
Simply running python /home/pi/myscript.py at startup will run your script without any terminal. So there is no window that can be kept open. The behavior you want can be achieved by starting an terminal application and let it execute your script.
e. g. using xterm:
xterm -e "python /home/pi/myscript.py"
or lxterminal:
lxterminal --command "python /home/pi/myscript.py"
I was missing a simple flag.. what I did was edit ~/.config/lxsession/LXDE-pi/autostart with
#lxterminal -e /home/pi/autoscript.sh
and in that file, I added
cd /home/pi/
python -i 2Trackmain.py
I wasn't using the -i flag, so every time I pressed Enter to move through the interactive py script, it exited the terminal, using -i will keep the window open for your interaction. And I only had to add the change directory part b/c the script called other scripts in the same directory.
In my python script I am opening chrome in app mode by this command:
google-chrome --app=http://stackoverflow.com
Now I want to be able to close only this running chrome application (I mean if there is another chrome windows with diffrent tabs I don't want to close that, only this that i run). Is this possible and how?
I am using linux.
EDIT:
As far i manage to do something like this:
import subprocess
proc = subprocess.Popen(['google-chrome',
'--user-data-dir=/home/chrome-user', 'http://google.pl'])
# do something
proc.terminate()
And when I call this python script from command line everything is ok. My problem starts when I am running this as a linux service (under /etc/init). I logged and everything is ok except that google chrome seems to not be able to create window or something? I mean there is no error but google chrome window doesn't shows at all.
EDIT 2:
Definitely it is a problem with startup. When i run this on startup:
mate-terminal -e "python3
/path/to/script/script.py"
Everything works fine except that terminal windows is shown. So this somehow solves my problem but if anyone will have got any sugestion what can i do i would highly apreciate it.
as far as I know chrome creates a new process for each tab, killing the process therefore would work. you can kill the process by PID and the PID can be retrieved like this right after starting the process: (in bash) echo $!
Ok so after a long time I come with answer. In linux mint you need to add this to startup programs:
mate-terminal -e "python3 /path/to/script/script.py"
and if you want to run script as root user, this is solution for it (it's very ugly, but works):
mate-terminal -e "bash -c 'echo pass | sudo -S python3 /path/to/script/script.py;$SHELL'"
I'm working with a tool right now that requires me to putty to a remote host, login, run a series of commands to start an engine, open a new window (and login again) to start a different engine, then open a third window (and again, login) to actually use the tool (leaving the engines running in those first two windows). I'd like to write a shell script to automate the process so that I could just open one window, type "sh whatever.sh" and be off and running, without physically opening the new windows and logging in again. However, I can't find a command to get me from one window to the next. Any thoughts?
You can just background the first processes by adding an ampersand (&) to the command line or pressing Ctrl+Z when it is running (and then enter bg to let the process continue, more information about that with jobs).
If that's not enough, you can create virtual shells with screen or tmux.
If you've redirected X (i.e. you can access GUIs over ssh), you can also just start a new window by executing your favorite (GUI) console program, like xterm, konsole, gnome-terminal, etc.
Are you familiar with jobs on linux?
nohup whatever_1.sh &
nohup whatever_2.sh &
nohup whatever_3.sh &
Or perhaps screen would be of use here:
https://serverfault.com/questions/25301/job-control-and-ssh
See also, nohup:
http://en.wikipedia.org/wiki/Nohup
The bash command opens a Bourne-again shell (bash) session.
Try typing in "konsole". That should open a new bash window and set the focus to it.
On my Ubuntu 18 I just type the command:
gnome-terminal
and a new shell opens... I don't like the above answers because xterm and konsole most likely not already be installed.
Shell script on target machine cannot be aware of putty windows on client machine.
Consider using Screen : http://www.gnu.org/s/screen/ - it is clean and powerful way.
I think you need command line window then write:
$ xterm
# new window started
If you need python in new window:
$xterm python
#now a window will shown with python shell
Another nice option from Xfce's terminal:
xfce4-terminal