jeff@heurikon.UUCP (08/25/84)
What's a good (and fast) way to print an ACSII
file from the back to the front? I.e., I'm
looking for a command that outputs the *last*
line of a file first and the *first* line last.
A loop with 'head -$nn file | tail -1' is too
slow and messy.
Thanks in advance.
--
/"""\ Jeffrey Mattox, Heurikon Corp, Madison, WI
|O.O| {harpo, hao, philabs}!seismo!uwvax!heurikon!jeff (news & mail)
\_=_/ ihnp4!heurikon!jeff (mail - fast)gwyn@BRL-VLD.ARPA (08/26/84)
From: Doug Gwyn (VLD/VMB) <gwyn@BRL-VLD.ARPA> Question: How to print a file last line first, first line last. Answer: Prefix line numbers, then "sort -rn", then strip line numbers.
kemp@noscvax.UUCP (08/27/84)
tail -r filename
lists the file backwards.
Steve Kemp {ihnp4, decvax, akgua, dcdwest, ucbvax}!sdcsvax!noscvax!kemp
Computer Sciences Corp. kemp@nosc
Naval Ocean Systems Center
San Diego, CA
berry@zinfandel.UUCP (08/27/84)
In article <601@noscvax.UUCP> kemp@noscvax.UUCP (Stephen P. Kemp) writes: > > tail -r filename > lists the file backwards. > Well, on my VAX 750 with 4.1BSD, tail -r of a LARGE file prints the last block or two backwards, then gives up. -- Berry Kercheval Zehntel Inc. (ihnp4!zehntel!zinfandel!berry) (415)932-6900
ajs@hpfcla.UUCP (ajs) (09/17/84)
Listing a file backwards: Someone posted tac(1) a while back. It's quite nice and very useful. I could repost it or mail it with manual entry... /* * From: cmcl2!salkind * Newsgroups: net.sources * Title: Line reversing program . . . Alan Silverstein, hpfcla!ajs