Can anyone tell me what is difference between Splunk service & splunk demon, & how to start splunk demon on linux env
Thanks command would be NET START splunkd
Bit confused, your question was about linux environment?
Anyway, if my answer helped, appreciated if you could accept it, so others can also benefit from it.
http://docs.splunk.com/Documentation/Splunk/latest/Admin/StartSplunk
Basically, (adjust the path for where you have installed splunk):
/opt/splunk/bin/splunk start