Returns the version of Splunk Universal Forwarders in an environment via _internal logs.

index=_internal sourcetype=splunkd group=tcpin_connections version=* os=* arch=* build=* hostname=* source=*metrics.log
| stats latest(version) as version,latest(arch) as arch,latest(os) as os,latest(build) as build by hostname
| join hostname [ | metadata type=hosts index=*
| eval last_seen_hours=(now()-lastTime)/60/60
| table host, last_seen_hours
| rex field=host "(?<hostname>[^\.]+)" | fields - host ]