UPDATE -
In splunk 5+ you can use time modifiers for index time
_index_earliest=-h@h _index_latest=@h
No, you can't. You can search/filter on _indextime:
_indextime > 126390000 _indextime <1263967510
but the Splunk index itself is organized by _time, so you would still need to specify a range for it conventionally (and if you wanted all time, it would have to look through all time.) And your results would come back ordered by _time, so you'd then need to sort.
In splunk 5+ you can use time modifiers for index time
_index_earliest=-h@h _index_latest=@h
After they messed with the blog, here is the new link: https://www.splunk.com/blog/2013/09/26/an-introduction-to-the-theory-or-relative-time-modifiers-for-...
UPDATE -
In splunk 5+ you can use time modifiers for index time
_index_earliest=-h@h _index_latest=@h
No, you can't. You can search/filter on _indextime:
_indextime > 126390000 _indextime <1263967510
but the Splunk index itself is organized by _time, so you would still need to specify a range for it conventionally (and if you wanted all time, it would have to look through all time.) And your results would come back ordered by _time, so you'd then need to sort.
This is only true for Splunk earlier than version 5.
Can you clarify what you mean by _indextime? The time at which the event was indexed, or some other time property of the containing index?