Very Computer

/tmp/x
/tmp/y/z/g/x.txt
/tmp/er/wsdf/sddd.doc

I would like to tar all of these files up, but have them untar in
relative fashion. ie,

tmp/x
tmp/y/z/g/x.txt
tmp/er/wsdf/sddd.doc

I am using Solaris tar

--
Terrence Brannon

One way is to tar it up from within /tmp

$ cd /tmp
$ tar cf whatever.tar *

Quote:> I have a command which outputs to STDOUT a bunch of absolute paths to
> some files of interest:

> /tmp/x
> /tmp/y/z/g/x.txt
> /tmp/er/wsdf/sddd.doc

> I would like to tar all of these files up, but have them untar in
> relative fashion. ie,

> tmp/x
> tmp/y/z/g/x.txt
> tmp/er/wsdf/sddd.doc

> I am using Solaris tar

  cd /
  COMMAND | cut -c 2- | xargs tar cf - | gzip -9 - > ~/foo.tar.gz

--

Frederick

Quote:> I have a command which outputs to STDOUT a bunch of absolute paths to
> some files of interest:

> /tmp/x
> /tmp/y/z/g/x.txt
> /tmp/er/wsdf/sddd.doc

> I would like to tar all of these files up, but have them untar in
> relative fashion. ie,

> tmp/x
> tmp/y/z/g/x.txt
> tmp/er/wsdf/sddd.doc

cd /
tar -cf file.tar `(command) |cut -c2- |xargs`

The 'cut -c2-' gets rid of the leading slash, the 'xargs' with no
arguments sticks 'em all onto one line.

If they're *not* all under the same tree, or you need the tree to
be different - say, for example, you've got:

/u01/staging1/docs/file1.txt
/u02/staging2/docs/file2.txt

and you want to have them both untar in:

/u03/staging3/docs/

Then you get into doing something like:

cd /u01/staging1/
tar -cf /u03/staging3/file.tar -C /u01/staging1 `(command) |xargs`
cd /u02/staging2/
tar -rf /u03/staging3/file.tar -C /u02/staging2 `(command) |xargs`

where 'command' in this case outputs filenames with a relative
path, based on the path passed with the -C flag.

Hope this is vaguely helpful.

-Dan

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mkdir /dest/dir (where you wish to extract the above files)
mkdir /dest/dir/dev /dest/dir/lib
ldd `which tar` <- ln (not -s) or cp all required libs to /dest/dir/lib
cp -p `which tar` /dest/dir/
cp mytarfile.tar /dest/dir/
create a rudimentary set of devicefiles in /dest/dir/dev/ required
for tar to operate (use truss or strace on a normal tar to find out
which /dev/ entries it uses)
then chroot /dest/dir ./tar xf ./mytarfile.tar

you probably need to be uid=0 if your chroot cmd is not suid-root.

juergen

--

2. xargs will*up if any of the filenames contain whitespace or
quoting characters.

3. Extracting the files from foo.tar.gz cannot be done with a simple
gunzip | tar, since it will likely contain several concatenated tar
archives.  (tar would stop at the end of the first archive.)

Since the OP was using Solaris, he could switch to using pax or cpio
to write the tar archive without the need for xargs:

  cd / && COMMAND | cut -d / -c 2- | pax -w -x ustar | gzip ...

  cd / && COMMAND | cut -d / -c 2- | cpio -oHustar | gzip ...

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