From: no.top.post@...
Date: 2011-05-16T19:42:01+09:00
Subject: Linux utility with reverse index facility?

awk &stuff can "give me the the Nth element",
but, without writing your own search-loop,
what can "give me the index of the 'element'
which is <elementValue>" ?

I think it's called 'reverse indexing' ?

== TIA.