|
From: | Jakob Bohm |
Subject: | Re: [Help-tar] Trouble with tar -xzf when using --files-from=- |
Date: | Fri, 23 Oct 2015 03:32:39 +0200 |
User-agent: | Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
On 22/10/2015 17:00, Reuti wrote:
As another tar user, I would consider this a clear bug,Am 22.10.2015 um 16:37 schrieb Reuti <address@hidden>: Tony:Am 21.10.2015 um 14:30 schrieb Tony Olekshy <address@hidden>: Tony Olekshy wrote, on 2015-10-20 at 19:20 MDT:Hello. I'm having trouble understanding why I can't pipe the output of a tar -tzf a.tgz ... through to a tar -xzf a.tgz --files=from=- ... without producing what appear to be spurious messages. In practice I want to place a filter in that pipeline to select just what to extract, but the following script simplifies that out to just show the problem I'm encountering.Reuti wrote, on 2015-10-21 at 04:32 MDT:Accessing "." in the archive will move its pointer already to the end: $ echo . | tar tf archive.tgz --files-from=- ./ ./foo/ ./foo/barReuti wrote, on 2015-10-21 at 05:10 MDT:Ah, although I missed the --no-recursion at the first glance: its position is important. It must appear before the --files-from=- in your case.Perfect, that did it. The attached script with the --no-recursion placed before the --files-from=- does exactly what I'm looking for, and I've tested it with a filter between the tar -t and the tar -x (a simple head -2 works for this testing), and it all works well. Thank you very much for you assistance with this matter, Reuti. Now I understand the difference between tar's globally scoped options & those that only apply to succeeding arguments.A short question: did you test your script also with 1.28? While it is working in 1.26 now, I get the impression that in 1.28: 1) --files-from must be an exact match, hence --no-recursion has no meaning for it now 2) Due to 1), plain directories can't be extracted with --files-from any longer, only on the command line:Aha, while you can extract "./" or "./foo/" on the command line, only a plain "." or "./foo" is allowed in the --files-from=. Nevertheless will the --list append the / for a directory in the output again. the file list parser should accept the same use of trailing slashes as all the other parts of the program. Enjoy Jakob -- Jakob Bohm, CIO, Partner, WiseMo A/S. https://www.wisemo.com Transformervej 29, 2860 Søborg, Denmark. Direct +45 31 13 16 10 This public discussion message is non-binding and may contain errors. WiseMo - Remote Service Management for PCs, Phones and Embedded |
[Prev in Thread] | Current Thread | [Next in Thread] |