in reply to How to reorder a text file
Title 3 Line of text D Title 3 [download]
Dang - Fried Brain Syndrome. How's this?
Title 1 Line of text A Line of text B Title 2 Line of text C Title 3 Title 4 Line of text D [download]
Title 4 Line of text D Title 3 Title 2 Line of text C Title 1 Line of text A Line of text B [download]
$ tac file | perl -ne'push@a,$_;if(/^Title\b/){print reverse@a;@a=()}' [download]