Hi,
I thought I could create a tar archive on the local computer, and pipe
it via ssh to append to a remote archive. This did not work. It seems
that with GNU tar 1.34, appending to a tar archive from /dev/stdin or
similar non-seekable input like bash process substitution does not work.
Here is an example. First, create some trivial archives:
$ echo Hello\ World > foo
$ tar cf foo.tar foo
$ cp foo.tar bar.tar
Now, let's try appending from /dev/stdin:
$ md5sum foo.tar
052b2b73a89f5ea4f587adc82a2ba87e foo.tar
$ cat bar.tar | tar -Af foo.tar /dev/stdin
$ tar tvvf foo.tar
-rw-r--r-- pi/pi 12 2022-11-02 23:56 foo
$ md5sum foo.tar
052b2b73a89f5ea4f587adc82a2ba87e foo.tar
That didn't change the archive at all, but there was no error message
saying that something went wrong. I think that's a bug. Now do a proper
append, to show how it should work:
$ tar Af foo.tar bar.tar
$ tar tvvf foo.tar
-rw-r--r-- pi/pi 12 2022-11-02 23:56 foo
-rw-r--r-- pi/pi 12 2022-11-02 23:56 foo
This was the expected result.
Thanks,
Boris
