Gentoo Archives: gentoo-user

From: Jerry McBride <mcbrides9@×××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Compression tools Compared
Date: Sat, 13 Aug 2005 13:40:52
Message-Id: 200508130936.27982.mcbrides9@comcast.net
In Reply to: Re: [gentoo-user] Compression tools Compared by Nick Rout
1 On Saturday 13 August 2005 01:32 am, Nick Rout wrote:
2 > On Sat, 2005-08-13 at 00:58 -0400, Jerry McBride wrote:
3 > > Anyone else here subscribe to the LINUX JOURNAL?
4 > >
5 > > In the September issue there's a neat article titled tha same as the
6 > > subject line of this message.
7 > >
8 > > The skinny is, there's some really nice file compressors out there and I
9 > > never heard of two of them... Anyone else know about LZMA or 7ZA?
10 > >
11 > > The two mentioned compression tools work pretty much like gzip. You tar
12 > > up your files, pipe to the compression filter and then on to the target
13 > > file. Below is a small example of what I've been seeing here at the
14 > > shack.
15 > >
16 > > -rw-r--r-- 1 root root 12359680 Aug 12 23:57 backup.tar
17 > > -rw-r--r-- 1 root root 3536665 Aug 13 00:01 backup.tar.7z
18 > > -rw-r--r-- 1 root root 4438465 Aug 13 00:08 backup.tar.bz2
19 > > -rw-r--r-- 1 root root 4747637 Aug 13 00:03 backup.tar.gz
20 > > -rw-r--r-- 1 root root 2731412 Aug 13 00:10 backup.tar.lzma
21 > > -rw-r--r-- 1 root root 5125474 Aug 13 00:16 backup.tar.lzop
22 > >
23 > > What you're seeing are the results of compressing /lib on my gentoo
24 > > powered laptop. I've not bothered with timing the processes as the better
25 > > compression rates are at the cost of speed and memory usage. Not good for
26 > > "while you wait" processing, but just plain perfect for backups and
27 > > what-have-you on servers... One side note, 7za does not record user/group
28 > > info...
29 >
30 > Are you saying it removes user/group info from the tar file?
31 >
32
33 Not "removed", it's never put there... :')
34
35
36 --
37
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Replies

Subject Author
Re: [gentoo-user] Compression tools Compared Nick Rout <nick@×××××××.nz>