hi splunkitsipoc,
usually you should be able to find it at /opt/splunk/etc/apps/ but it depends if Splunk was actually installed in /opt .
Login as the user that runs Splunk and if you are lucky enough, this user has the Splunk environments variables setup, then you can just do a cd $SPLUNK_HOME/etc/apps and you will be in the right directory.
If that does not work try running this command find / -type d -name splunk to find the location of the installed Splunk.
Hope this helps ...
cheers, MuS
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