Sponsored Content
Full Discussion: Tar differential backup
Top Forums UNIX for Dummies Questions & Answers Tar differential backup Post 302386073 by quirkasaurus on Monday 11th of January 2010 09:00:51 AM
Old 01-11-2010
Well... how about a combo of tar and ksh?

Create a list of the contents of your tar files at the time of their creation.
tar tvf tar_file > tar_info.dat
Compare the time stamp and/or size.
Modify the new tar list.

Then, when creating your list of files to include in tar, simply verify that the time stamp is different.

That is:
Code:
find . -type f -ls |
while a b c d e f g mon mday hours file_nm ; do

  nawk '$8==file_nm {print $4, $5, $6;}' file_nm=file_nm | read tar_mon tar_mday tar_hours

  if [[ $tar_mon != $mon ||
        $tar_mday != $mday ||
       $tar_hours != hours ]]; then
        print $file_nm
  fi

done >> new_tar_list

perhaps some tweakin may be in order.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

tar backup

Hi all, I would like to append list of files to already taken tar backup file. can anybody help? last month backup : cd /accounts/11 tar -cvf monthback.tar * Now I want to add /accounts/12 to monthback.tar is it possible? Krishna (1 Reply)
Discussion started by: krishna
1 Replies

2. Filesystems, Disks and Memory

Using `tar` for a selective backup.

Hi all & anyone. I'm trying to selectively backup up some old Apache log files before they are removed from the system (Slackware box). Have created a file listing of what I want backed up ...Below is a portion of the file ./selectedbkup... (2 Replies)
Discussion started by: Cameron
2 Replies

3. UNIX for Dummies Questions & Answers

tar backup problems

Im trying to use tar to backup the os directories. I have a file called bdirs which contains a list of the directories that im trying to backup: /bin /dev /devices /etc /export /home /kernel /lib /local /mnt /opt /platform /proc /sbin start /usr /var /vol (3 Replies)
Discussion started by: blakmk
3 Replies

4. UNIX for Dummies Questions & Answers

Backup help/advice using TAR

Every day we back up all files on our system that are older than 7 days, so effectively we do a day's worth at a time. The way we do this is to issue a find command using mtime +7 - we then loop round and for each result we issue a MV to move the file to a newly created directory. We then TAR the... (20 Replies)
Discussion started by: tonysab
20 Replies

5. UNIX for Dummies Questions & Answers

Tar backup

I am trying to do a full system backup using tar. It then after maybe 12 or so hours comes up with tar: write error: unexpected EOF. I have thoroughly cleaned the drive and tried to use a different drive but it still gives me this error. Can someone help. I am on solaris 8. (1 Reply)
Discussion started by: TMashie
1 Replies

6. Red Hat

tar backup on network

Hi all, i need to backup files on network from RHEL 4 machine tape drive is installed on solaris 10 machine and want ot use this using # tar cv /myfiles |ssh -l myuser myhost 'buffer -o /dev/rmt/0 " to backup these file but getting getting error " sh buffer not found ' even "buffer-1.19-1"... (2 Replies)
Discussion started by: ajays
2 Replies

7. UNIX for Dummies Questions & Answers

Backup with tar

Hi friends, I am planning to backup my Solaris Servers to SAN storage using tar. Also palnning to automate the job using Crontab. Can anyone advise how to make the date change automatically everyday for backup. Pls correct me if I am wrong. Thanks (7 Replies)
Discussion started by: solaris5.10
7 Replies

8. Shell Programming and Scripting

File Backup - TAR help

Hi, Another rookie here. I have a script I am developing to backup files from various directories onto a windows machine. Script description: - mv files from various directories - tar all files in that directory - export to windows server for safe keeping, external backups. The... (5 Replies)
Discussion started by: mcclunyboy
5 Replies

9. UNIX for Dummies Questions & Answers

[SOLVED] Restoring differential backup files

I'm using a script (automysqlbackup) to dump mysql db's to .sql file followed by taking one full backup of the .sql file and the differential backups of the newer sql file every day using the tool diff. Now the backup destination folder contains files like, I would like to how do i restore... (3 Replies)
Discussion started by: csengineer
3 Replies

10. Red Hat

Backup and restore using tar

This will be covered elsewhere im sure but i just cant seem to find my exact issue. I want to backup my systems using tar, command is: tar -cjpf /backup /bin /etc /home /opt /root /sbin /usr /var /bootWhen i include the / directory it also tar's the /lib /sys /proc /dev filesystems too (and... (8 Replies)
Discussion started by: Tommyk
8 Replies
virt-tar-out(1) 					      Virtualization Support						   virt-tar-out(1)

NAME
virt-tar-out - Pack a virtual machine disk image directory into a tarball. SYNOPSIS
virt-tar-out -a disk.img /dir files.tar virt-tar-out -d domain /dir files.tar virt-tar-out -d domain /dir - | gzip --best > files.tar.gz DESCRIPTION
"virt-tar-out" packs a virtual machine disk image directory into a tarball. The first parameter is the absolute path of the virtual machine directory. The second parameter is the tar file to write. Use "-" to write to standard output. EXAMPLES
Download the home directories from a guest: virt-tar-out -d MyGuest /home - | gzip --best > homes.tar.gz JUST A SHELL SCRIPT WRAPPER AROUND GUESTFISH
This command is just a simple shell script wrapper around the guestfish(1) "tar-out" command. For anything more complex than a trivial copy, you are probably better off using guestfish directly. OPTIONS
Since the shell script just passes options straight to guestfish, read guestfish(1) to see the full list of options. SEE ALSO
guestfish(1), virt-cat(1), virt-copy-in(1), virt-copy-out(1), virt-edit(1), virt-tar-in(1), <http://libguestfs.org/>. AUTHORS
Richard W.M. Jones ("rjones at redhat dot com") COPYRIGHT
Copyright (C) 2011 Red Hat Inc. <http://libguestfs.org/> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. libguestfs-1.18.1 2013-12-07 virt-tar-out(1)
All times are GMT -4. The time now is 08:06 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy