You can try fallow step:
/opt/splunk/bin/splunk stop
[root@localhost default]# cat app.conf
[install]
state = enabled
is_configured = true
build = 96252
[package]
id = unix
[ui]
is_visible = true
label = *NIX
[launcher]
author=Splunk, Inc.
description=This is a useful app for helping monitor, manage, and troubleshoot *nix platforms. This app comes with set of scripted inputs for collecting CPU, disk, I/O, memory, log, configuration, and user info. It also provides convenient dashboards, form searches, and alerts to make getting started with Splunk a breeze.
version = 4.2.0
3.
[root@localhost default]# cat inputs.conf
[script://./bin/vmstat.sh]
interval = 60
sourcetype = vmstat
source = vmstat
index = os
disabled = 1
..
..
4.
/opt/splunk/bin/splunk start
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