In a project, I have to deploy a simple server program on several remote servers. So I wrote a shell script to deploy and run the program using scp and ssh.
Since there are several remote servers, I have to run the server program in the background on all remote machines.
At first, I simply add the ampersand (&) at the end of the command like this:
ssh user@host "cd /some/directory; ./program &"But my script just hangs after it runs first remote server. After googling this problem, I found this command to solve it.
ssh -n -f user@host "sh -c 'cd /some/directory; nohup ./program > /dev/null 2>&1 &'"This command is quiet complicated. It need to use nohup as well as output redirection. But it works and solved my problem.