Date: Sun, 18 Jun 2017 22:48:13 +0200 From: Polytropon <freebsd@edvax.de> To: David Christensen <dpchrist@holgerdanske.com> Cc: freebsd-questions@freebsd.org Subject: Re: tar: Failed to open '/dev/sa0' Message-ID: <20170618224813.4b11a480.freebsd@edvax.de> In-Reply-To: <9369978e-7041-3ef9-2cb4-66555054425b@holgerdanske.com> References: <9369978e-7041-3ef9-2cb4-66555054425b@holgerdanske.com>
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On Sun, 18 Jun 2017 11:59:07 -0700, David Christensen wrote:
> 2017-06-18 11:52:44 dpchrist@freebsd ~
> $ gtar c .thunderbird > dpchrist-thunderbird-20170618.tar
> gtar: /dev/sa0: Cannot open: Operation not supported
> gtar: Error is not recoverable: exiting now
>
>
> BSD tar also fails:
>
> 2017-06-18 11:52:56 dpchrist@freebsd ~
> $ tar --version
> bsdtar 3.2.1 - libarchive 3.2.1 zlib/1.2.8 liblzma/5.2.2 bz2lib/1.0.6
>
> 2017-06-18 11:53:14 dpchrist@freebsd ~
> $ tar c .thunderbird > dpchrist-thunderbird-20170618.tar
> tar: Failed to open '/dev/sa0'
>
>
> What's the problem?
The problem is that you didn't provide a file name. In this
case, tar will default to $TAPE (if set), or the system's
default tape drive, which is /dev/sa0 (sequential access #0).
A file is provided along with the "f" parameter:
$ tar cf dpchrist-thunderbird-20170618.tar .thunderbird
If you want redirection, you can use "tar cf -" (output to
stdout):
$ tar cf - .thunderbird > dpchrist-thunderbird-20170618.tar
The order doesn't matter ("tar cf" equals "tar fc"), but the
file name required by "f" has to be provided prior to the
source file(s) or directory.
--
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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