Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!mailrus!iuvax!rutgers!rochester!udel!burdvax!pearl!lang
From: lang@pearl.PRC.Unisys.COM (Francois-Michel Lang)
Newsgroups: comp.unix.questions
Subject: sorting and reversing lines of a file
Keywords: sort reverse
Message-ID: <9056@burdvax.PRC.Unisys.COM>
Date: 26 Jan 89 14:13:44 GMT
Sender: news@PRC.Unisys.COM
Lines: 27


I need utilities to do two things:
(1) reverse the order of lines in a file
    but leave the lines themselves intact.
    The Unix utility does just the opposite of this.

    E.g., if the file "f" contains
       line1 
       line2
       line3
    I want to produce
       line 3
       line 2
       line 1
    I have an awk program to do this,
    but I'm sure some clever soul out there can do much better.

(2) sort a file by length of input lines.
    Again, I have a script to do this which uses awk, sort, and sed,
    but I'm sure it can be done better.

I'd prefer no C programs!
Many thanks.
----------------------------------------------------------------------------
Francois-Michel Lang
Paoli Research Center, Unisys Corporation lang@prc.unisys.com (215) 648-7256
Dept of Comp & Info Science, U of PA      lang@cis.upenn.edu  (215) 898-9511