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process gets killed on server when closing SSH session – CentOS

I use PuTTY to connect to my Linux (centos 8) server by SSH. then I run my java program on server by the command

java -cp /.../ app

everything is fine and the program runs continuously, but when I close my SSH session in PuTTY, my java program gets also killed. why it happens and how to prevent it?!

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2

Answers


  1. 0

    This is an expected behavior. If you want to keep running your java jar file even though you close the SSH putty session , create a shell script and try to run the java application through running the shell script.

    A sample script is shown below, you can modify according to your need :

    Name the script : app.sh

    Sample Script Content :

    #!/bin/sh

cd /home/user/    #path where your jar file is kept
java -jar app.jar

    Go to the location of the script :

    Give proper execute permissions to the script app.sh :
chmod 755 app.sh

Run the script as : ./app.sh
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  2. 0 
       nohup java -jar test.jar &

    nohup is a POSIX command to ignore the HUP (hangup) signal. The HUP signal is, by convention, the way a terminal warns dependent processes of logout.

    Output that would normally go to the terminal goes to a file called nohup.out if it has not already been redirected.

    In short, it stands for no hang up.

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