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Full Discussion: Help understanding the script
Top Forums Shell Programming and Scripting Help understanding the script Post 302983599 by Chubler_XL on Thursday 13th of October 2016 04:20:17 PM
Old 10-13-2016
The backup backup Julian date calculation is quite simple if you have GNU date available on your system.

GNU date would allow us to convert date strings in this manor:

Code:
$ date -d "Oct 7 2016"
Fri, Oct 07, 2016 12:00:00 AM

Your calculation would then simply be:

Code:
PrevHostname=''
PrevBackup=0
while read input
do
  if [[ ${input:9:1} = ':' ]] then
     DateStr="${input:0:3} ${input:4:2}"
  else
     DateStr="${input:0:3} ${input:4:2} 20${input:10:2}"
  fi
  Backup=$(( $(date -d "$DateStr" +%y*365+%j) ))

 

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LEARN ABOUT XFREE86

backup_volinfo

BACKUP_VOLINFO(8)					       AFS Command Reference						 BACKUP_VOLINFO(8)

NAME
       backup_volinfo - Displays a volume's dump history from the Backup Database

SYNOPSIS
       backup volinfo -volume <volume name> [-localauth]
	   [-cell <cell name>] [-help]

       backup voli -v <volume name>
	   [-l] [-c <cell name>] [-h]

DESCRIPTION
       The backup volinfo command displays a dump history of the specified volume, reporting information such as the date on which the volume was
       dumped and the tapes that contain it. Include the ".backup" extension on the volume name if the backup version of the volume was dumped.

OPTIONS
       -volume <volume name>
	   Names the volume for which to display the dump history. Include the ".backup" or ".readonly" extension if the backup or read-only
	   version of the volume was dumped.

       -localauth
	   Constructs a server ticket using a key from the local /etc/openafs/server/KeyFile file. The backup command interpreter presents it to
	   the Backup Server, Volume Server and VL Server during mutual authentication. Do not combine this flag with the -cell argument. For more
	   details, see backup(8).

       -cell <cell name>
	   Names the cell in which to run the command. Do not combine this argument with the -localauth flag. For more details, see backup(8).

       -help
	   Prints the online help for this command. All other valid options are ignored.

OUTPUT
       The output includes a line for each Backup Database dump record that mentions the specified volume, order from most to least recent. The
       output for each record appears in a table with six columns:

       dumpID
	   The dump ID of the dump that includes the volume.

       lvl The depth in the dump hierarchy of the dump level at which the volume was dumped. A value of 0 indicates a full dump. A value of 1 or
	   greater indicates an incremental dump made at the specified depth in the dump hierarchy.

       parentid
	   The dump ID of the dump's parent dump. A value of 0 indicates a full dump, which has no parent; in this case, the value in the "lvl"
	   column is also 0.

       creation date
	   The date and time at which the Backup System started the dump operation that created the dump.

       clone date
	   For a backup or read-only volume, the time at which it was cloned from its read/write source. For a read/write volume, the same as the
	   value in the "creation date" field.

       tape name
	   The name of the tape containing the dump: either the permanent tape name, or an AFS tape name in the format
	   volume_set_name.dump_level_name.tape_index where volume_set_name is the name of the volume set associated with the initial dump in the
	   dump set of which this tape is a part; dump_level_name is the name of the dump level at which the initial dump was backed up;
	   tape_index is the ordinal of the tape in the dump set. Either type of name can be followed by a dump ID in parentheses; if it appears,
	   it is the dump ID of the initial dump in the dump set to which this appended dump belongs.

EXAMPLES
       The following example shows part of the dump history of the Backup volume "user.smith.backup":

	  % backup volinfo -volume user.smith.backup
	  DumpID    lvl parentID  creation date    clone date	    tape name
	  924600000 1	924427600 04/20/1999 05:20 04/20/1999 05:01 user_incr_2 (924514392)
	  924514392 1	924427600 04/19/1999 05:33 04/19/1999 05:08 user_incr_2
	  924427600 0		0 04/18/1999 05:26 04/18/1999 04:58 user_full_6
	      .     .	   .	     .	     .	     .	    .	      .
	      .     .	   .	     .	     .	     .	    .	      .

PRIVILEGE REQUIRED
       None

SEE ALSO
       backup(8), backup_dumpinfo(8), backup_volrestore(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							 BACKUP_VOLINFO(8)
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