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Full Discussion: Help with Backup Shell Script
Top Forums Shell Programming and Scripting Help with Backup Shell Script Post 302555171 by pludi on Wednesday 14th of September 2011 04:59:18 AM
Old 09-14-2011
2 reads that I can recommend, though a bit dated: Bash Programming Introduction and Advanced Bash Scripting.

My suggestion is get the flow of the script down first, without thinking too much about the programming language. Eg.
Code:
for each directory to be backed up
  create an archive of that directory
  if successful
    copy the archive to the backup server
    remove all but the last 7 backups
    send a mail to the admin
  else
    send the error to the admin

On the backup server
Code:
find all backups older than 3 months and remove them

Then, create small parts of the script task by task, eg. create the loop you need, then how to remove all but the last 7 backups, how to copy it to the backup server, ... You won't need much syntax for a script like this, and you should do with these commands: find, scp, tar, mailx.

And 2 days left isn't all that much time, so either you've been slacking off, pretended that you know shell scripting during the interview, or your boss doesn't know what kind of effort really is needed.
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LEARN ABOUT XFREE86

bdb.db0

BDB.DB0(5)							AFS File Reference							BDB.DB0(5)

NAME
       bdb.DB0, bdb.DBSYS1 - Contain the Backup Database and associated log

DESCRIPTION
       The bdb.DB0 file contains the Backup Database, which records configuration information used by the AFS Backup System along with cross-
       indexed records of the tapes created and volumes dumped using the Backup System commands.

       The bdb.DBSYS1 file is a log file in which the Backup Server (buserver process) logs each database operation before performing it. When an
       operation is interrupted, the Backup Server replays the log to complete the operation.

       Both files are in binary format and reside in the /var/lib/openafs/db directory on each database server machine that runs the Backup
       Server.	When the Backup Server starts or restarts on a given machine, it establishes a connection with its peers and verifies that its
       copy of the bdb.DB0 file matches the copy on the other database server machines. If not, the Backup Servers use AFS's distributed database
       technology, Ubik, to distribute to all of the machines the copy of the database with the highest version number.

       Use the commands in the backup suite to administer the Backup Database. It is advisable to create a backup copy of the bdb.DB0 file on tape
       on a regular basis, using the UNIX tar command or another local disk backup utility.

SEE ALSO
       backup(8), backup_savedb(8), buserver(8)

COPYRIGHT
       IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

       This documentation is covered by the IBM Public License Version 1.0.  It was converted from HTML to POD by software written by Chas
       Williams and Russ Allbery, based on work by Alf Wachsmann and Elizabeth Cassell.

OpenAFS 							    2012-03-26								BDB.DB0(5)
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