I usually use remote linux debugger as shown below:
And in IDA Pro, I select Remote Linux Debugger as the debugger and set the process options accordingly with the IP address and port of the Linux machine. The default port is 23946.
This works alright.
However, if I already have a process running on the Linux Machine with PID: 400. How can I attach Remote Linux debugger to this already running process?
I can see that linux_server provides only the following options:
$ ./linux_server --help -i... IP address to bind to (default to any) -v verbose -p... port number -P... password -k keep broken connections