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RE: tar question



--"Dege, Robert C." <robert dege ngc com> wrote:


Tar will only exclude patterns that match the list in the archive it's
creating.  So first, you need to drop the '/', since tar automatically
drops that.

So your tar line should look like this:

# tar -cvf /backup.tar --exclude=home/tempuser/work /home/tempuser

Not true ;-) ... It's not important whether you have the '/' or not.
But you must precede every 'exclude' with the '--exclude' flag. You can't list
them like you did. At leas in GNU tar.

Try this (tar-1.14-4): The presence of the toplevel '/' has no effect:

  # cd /tmp

  # tar czf etc1.tgz /etc --exclude etc/sysconfig
  # tar czf etc2.tgz /etc --exclude /etc/sysconfig
  # tar czf etc3.tgz /etc

  # tar tzf etc1.tgz | grep sysconfig
  etc/X11/sysconfig/
  etc/X11/starthere/sysconfig.desktop

  # tar tzf etc2.tgz | grep sysconfig
  etc/X11/sysconfig/
  etc/X11/starthere/sysconfig.desktop

  # tar tzf etc3.tgz | grep sysconfig
  etc/sysconfig/
  etc/sysconfig/console/
  etc/sysconfig/system-logviewer
  etc/sysconfig/ntpd
  ........

However:

  # tar czf etc4.tgz /etc --exclude etc/sysconfig etc/ntp
  tar: Removing leading `/' from member names
  tar: etc/ntp: Cannot stat: No such file or directory
  tar: Error exit delayed from previous errors

You must do

  # tar czf etc4.tgz /etc --exclude etc/sysconfig --exclude etc/ntp

Interestingly, I put the files-to-backup before the '--exclude',
you put them after, which is the way to do it according to the man page.
Interesting.




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