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bug#12115: Please add tip about using tac to reverse a file byte-by-byte


From: Andreas Schwab
Subject: bug#12115: Please add tip about using tac to reverse a file byte-by-byte
Date: Thu, 02 Aug 2012 16:00:43 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux)

Eric Blake <address@hidden> writes:

> On 08/02/2012 07:18 AM, Andreas Schwab wrote:
>>> For bash, one solution is:
>>>
>>>     $ printf '\na\nb'|tac -rs '.\|'$(printf "\n")
>> 
>> No, command substitution strips trailing newlines.
>
> So don't make it trailing:
>
> printf '\na\nb'|tac -rs "$(printf '\n\\|.')"

It's still a useless command substitution.

Andreas.

-- 
Andreas Schwab, address@hidden
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"And now for something completely different."





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