for example,
here is splunk at some path (/splunk)
splunk stop.
I install new version
splunk start
splunk find new version....(new version detect message...)
how to check new version??
You can also find the version in splunk web.
Help->About
"splunk version" in CLI or you can check at the bottom of the Splunk Web login page.
You can see the version using following
splunk version
You can also check the .manifest file available under $SPLUNK_HOME directory,