2
votes
1answer
25 views

Compress a tar file without extracting the content

Is it possible to compress a tar file such that I don't end up with an archive file in an other archive file but just an archive file containing my content fx. a tar.gz file? I don't want to extract ...
3
votes
2answers
53 views

In what situation would a tarball (.tgz) be almost the same size as the original

I just tarballed a dump of some websites (configs, image directory, css directory, and site content (html files etc)) using tar czf sitedump.tgz backup_folder/. The original "backup_folder" was about ...
2
votes
2answers
93 views

Making tar split archives as it compresses?

I want to compress a file with tar but I'd like to know if its possible to do it while splitting the files. I know that in windows is possible to do this with winrar, I also know I can use split but ...
17
votes
3answers
2k views

Does tar actually compress files, or just group them together?

I usually assumed that tar was a compression utility, but I am unsure, does it actually compress files, or is it just like an ISO file, a file to hold files?
9
votes
3answers
960 views

Universal extractors

With an increasing number of archive/compression file formats, is there a single free/open-source command line tool to rule them all? Perhaps something with a consistent / unified set of flags? (note ...
1
vote
1answer
747 views

Difference between --xz and --lzma in GNU tar?

As far as I can tell, XZ is a container that uses the LZMA2 algorithm (i.e. extended LZMA); but e.g. $ xz foo/ complains about foo/ being a directory. So presumably the correct way to preserve ...
3
votes
8answers
2k views

Triple compression and I only save 1% in space?

I've been trying to save space on my linux server, and I had a folder containting, in subfolders, 22GB of images. So I decided to compress them. First I used tar: tar -zcf folder.tar folder Then ...
0
votes
2answers
133 views

Can tar archiver zerofill a file?

I have received a tar archive from a co-worker and after decompresing I found that some text files are corrupted. More precisely they are filled with zeros. They have correct size but all bytes are ...
6
votes
1answer
1k views

On the Fly Compression for a Directory

I have a directory that is always going to be storing text files that are rarely (think weekly) used. Naturally this is a great place to use compression. However, rather than having to use tar ever ...
3
votes
3answers
480 views

Different count for compressed file listing vs directory listing

I was taking a backup of a folder, where I used the following command : sudo tar -zcvf www.tar.gz /var/www/ It successfully compressed, just for verifying the number of files in the compressed ...
27
votes
5answers
17k views

How to XZ a directory with TAR using maximum compression?

So I need to compress a directory with max compression. How can I do it with xz? I mean I will need tar too because I can't compress a directory with only xz. Is there a oneliner to produce e.g. ...
9
votes
2answers
4k views

How to create a tar.gz file from a folder excluding a folder

How do I exclude a file or folder while creating a tar.gz file with tar command?
1
vote
1answer
2k views

Updating tar.gz daily only with changed files [duplicate]

Possible Duplicate: Add/update a file to an existing tar.gz archive? I have some game files I wish to update daily and they create a tar.gz of the folder, but instead of making a full ...