How to create tar file with 7zip

Question

I'm trying to create a tar file on windows using 7zip.

Most of the documents I found said to do something like this:

7z a -ttar -so dwt.tar dwt/

But when I tried to run it I got this error:

Command Line Error: I won't write compressed data to a terminal

I'm currently using 7-Zip [64] 16.04

Any idea?

score 9 · Answer 1 · answered Nov 13 '18 at 14:32

9

On Linux:

tar cf - <source folder> | 7z a -si <Destination archive>.tar.7z

from here

On Windows:

7za.exe a -ttar -so archive.tar source_files | 7za.exe a -si archive.tgz

from here.

answered Nov 13 '18 at 14:32

Tu.Ma.

I'm currently doing that, but I'm keep getting the error. "C:\Program Files\7-Zip\7za.exe" a -ttar -so test.tar test" – radicaled Nov 13 '18 at 14:47
You are not using the command suggested in my answer. You are using the one in your question. Look carefully, there is a pipe followed by another 7z command. -so writes to stdout, that's why it keeps giving you the error. – Tu.Ma. Nov 14 '18 at 08:09

score 7 · Answer 2 · answered Feb 20 '19 at 09:54

I managed to do that making simply, with 7zip installed:

score 1 · Answer 3 · answered Aug 28 '22 at 02:56

From the manpage:

   -so    Write data to stdout (e.g. 7z x -so directory.tar.7z | tar xf -)

It does what you told it to. 7z can guess archive format from the file extension so it's enough to use

7z a archive.tar input/

To further compress as gzip you can use a pipe and a combination of stdin and stdout flags like in Tu.Ma.'s answer.

3 Answers3