You want to know what is the status of an SAP Java System using the command line: jsmon.

1 - Login at OS Level as user <sid>adm
# su - <sid>adm
2 - Find the profile used:
# ps -ef | grep <sid>adm | grep pf
...... pf=/usr/sap/<SID>/SYS/profile/<SID>_INSTANCE_host-server
3 - Execute the jsmon command
# jsmon pf=/usr/sap/<SID>/SYS/profile/<SID>_INSTANCE_host-server
You will get the screen bellow:

If you want to see the status, enter jsmon view
If you want to see the process status: enter process view
Enter "Exit" to leave jsmon.
Hope the helps you.