Question

6

Running command in a new bash shell process

rated 0 times [ 6] [ 0] / answers: 1 / hits: 2759 / 3 Years ago, wed, june 2, 2021, 5:54:34

I have looked around as I would've thought this would be a rather common question, but nothing seems to be working for me.

Basically I'm trying to SSH into a device (Raspberry Pi) to run a process. The process is node ./bin/www. I wrote a publish.sh script that does a few things before this, but when I run the command ssh user@hostname "cd <my-location>;node ./bin/www it respectively starts the process in my current bash shell.

What I'm looking to do is open up a new bash shell to run that command, as that process will start a web server.

I tried wrapping my ssh command in bash -c 'ssh ...' but it still runs in the same shell window that the publish.sh script was kicked off in. Am I doing something wrong? What exactly do I need to do in my shell script to run a command in a new bash shell process?

Thanks!

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scusaper

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2 Years ago

answered 3 Years ago olltea · Accepted Answer

You can use ssh with -n option as,

ssh -Xn user@hostname <command> <argument>

Use of -X is optional to forward X11. In your case,

ssh -n user@hostname node ./bin/www

Example: To open a text file (file.txt) in remote machine with gedit,

ssh -Xn user@hostname gedit file.txt

From man ssh

-n      A common trick is to use this to run X11 programs on a remote machine.  For example,

         ssh -n shadows.cs.hut.fi emacs & will start an emacs on shadows.cs.hut.fi, and the X11 connection will be

         automatically forwarded over an encrypted channel.  The ssh program will be put in the background.