Re: Use tar to append?

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On Friday 09 March 2007, Mike McCarty wrote:
>Cameron Simpson wrote:
>> Maybe:
>>
>>   tar Af tarfile more-files...
>
>First one needs tar cf...
>Apparently tar Af does not work unless the tar file already
>exists.
>
>> Seems like it should do the trick. It should be efficient if the
>> tarfile is not compressed. But I'm saying this on the basis of the
>> info file for GNU tar, and I'm presuming that "A" is more efficient
>> than "r", though the info file is... vague... about this (to be
>> charitable).
>
>Yes, indeed.
>
>Well, I tried it, and it's taking longer and l.o.n.g.e.r and
>l..o..n..g..e..r for each new diretory. It just timed /usr/src
>and it took over 2 minutes to back up 48 kilobytes. It's copying
>and copying or seeking and seeking or sth.
>
>Mike

Did you perchance put tars output file IN the directory its backing up.  
That's a recursive situation that will only die when you kill it, or the 
drive is full.  The latter generally isn't pretty.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Photographing a volcano is just about the most miserable thing you can do.
		-- Robert B. Goodman
	[Who has clearly never tried to use a PDP-10.  Ed.]


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