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Full Discussion: bash typeset padding with zeros
Top Forums Shell Programming and Scripting bash typeset padding with zeros Post 302212831 by jwheeler on Tuesday 8th of July 2008 12:35:48 PM
Old 07-08-2008
Data bash typeset padding with zeros
Hi everybody,

I have a question about typesetting. I originally wrote a script for use with ksh and now I am on a system that I cannot modify, and it only has bash.

In the original script I just did typeset -RZ4 variable and it would add the leading zeros. In bash, it doesn't work.

I've looked all over and I can't find anything useful that will help me format the variable.

the script is just a simple script to expire about a thousand tapes from netbackup's media database. It's very tedious to do it one at a time with the tapes being labeled NB0000 - NB0999.

so the variable I am typesetting will always be 4 digits.

Any help would be appreciated.

here is the code. it was my first attempt at shell scripting so don't make fun of it too much.

Code:
#! /bin/ksh
# Script to expire tapes in NBU
# REQUIRES that NBU to be installed (DUH)
# Tapes should be in order (ie. NR0000, NR0001, NR0002, etc)

# This ensures that our format will be preserved.
# Makes sure $addon has four digits.
typeset -RZ4 addon

# Get two letter prefix for tapes
clear
echo "Please enter the 2 letter prefix (ie. NR, AB, CD)"
read prefix

# Get the four digits of the first tape
echo "Please enter the last 4 digits of the first tape (ie. 0000 0001 00002)"
read addon

# Get the four digits of the last tape
echo "Please enter the last 4 digits of the last tape to expire"
read last

#Increment the last variable by one so that the while loop will work
let last++

# This creates our tape name (ie NR0000
newfix=$prefix$addon

# While loop to increment through the tapes
while (( $addon <  $last))
do
/usr/openv/netbackup/bin/admincmd/bpexpdate -d 0 -m $newfix -force
let addon++
newfix=$prefix$addon
done
echo " "
echo " "
echo "By the power of Grey Skull, the tapes have expired!"
exit 0

Last edited by rbatte1; 08-03-2017 at 07:11 AM.. Reason: Code tags
 

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LEARN ABOUT OPENSOLARIS

ndmpstat

ndmpstat(1M)						  System Administration Commands					      ndmpstat(1M)

NAME

       ndmpstat - show NDMP backup progress statistics

SYNOPSIS

       ndmpstat  [tapes] [interval [count]]

DESCRIPTION

       The  ndmpstat  utility  reports Network Data Management Protocol (NDMP) statistics, among which are  NDMP worker threads, disk IO, tape IO,
       files operation, performance, and backup activity.

       ndmpstat reports the aggregate statistics for all tapes and disks. In order to obtain statistics for specific tape devices, the tape device
       name should be passed as argument to the utility.

       When invoked, ndmpstat begins its display with a one-line summary of the NDMP daemon activity since the NDMP service was invoked.

   Display Fields
       The fields in ndmpstat output are described as follows:

       wthr

	   Report the number of worker threads in each	of  the four following states:

	   r

	       the number of worker threads running

	   w

	       the number of blocked worker threads that are waiting for resources such as I/O and paging

	   b

	       the number of backup operations currently running

	   r

	       the number of restore operations currently running

       file

	   Report on usage of filesystem.

	   rd

	       the number of files being read

	   wr

	       the number of files being written

       disk

	   Report the number of disk operations per interval.

	   rd

	       the number of disk blocks being read

	   wr

	       the number of disk blocks being written

       tape

	   Report the number of tape operations per interval. There are slots for up to four tapes, labeled with a single number. The number indi-
	   cates the name of the device under /dev/rmt.

	   rd

	       the number of tape blocks being read

	   wr

	       the number of tape blocks being written

       bytes

	   Report the number of bytes transferred. This is the aggregate value of both tape and disk devices. The number is in kilobytes.

	   rd

	       the number of kilobytes being read

	   wr

	       the number of kilobytes being written

       perf

	   Displays a rough estimate of performance of the backup/restore operation in megabytes per second.

	   bk

	       backup performance

	   rs

	       restore performance

       prcnt

	   Display the comparative usage of resources, in percent.

	   dsk

	       disk I/O time

	   tpe

	       tape I/O time

	   otr

	       other time (memory or idle)

       See EXAMPLES.

OPERANDS

       The following operands are supported:

       count	   Specifies the number of times that the statistics display is repeated.

       tape	   Specifies which tapes are to be given priority in the output. A command line is limited to a maximum of four  tape  devices.  A
		   common tape name is /dev/rmt/n, where n is an integer.

       interval    Specifies the number of seconds over which ndmpstat summarizes activity. The specified interval remains in effect till the com-
		   mand is terminated.

EXAMPLES

       Example 1 Using ndmpstat

       The following command displays a summary of NDMP daemon activity at five-second intervals.

	 example% ndmpstat 5
	 wthr	  file	    disk      tape	  bytes      perf	prcnt
	 r w b r rd  wr    rd  wr   rd	  wr	 rd    wr   bk	rs  dsk  tpe  otr
	 1 0 3 6 50   9   1250	0  32544 4455	42335 3234   5	4   20	 40   40
	 1 0 0 1  1   0    128	0    0	 128	 64    64    1	0    0	 80   20
	 1 0 0 1  2   0    128	0    0	   0	 64	0    1	0   80	  0   20
	 1 0 0 1  1   0    128	0    0	   0	 64	0    1	0   80	  0   20
	 1 0 0 1  3   0    128	0    0	   0	 64	0    0	0   80	  0   20
	 1 0 0 1  1   0    128	0    0	 128	 64    64    1	0    0	 80   20
	 ^C
	 example%

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWndmpu 		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |See below 		   |
       +-----------------------------+-----------------------------+

       Invocation is evolving. Human readable output is unstable.

SEE ALSO

       iostat(1M), mpstat(1M), ndmpd(1M), ndmpadm(1M), attributes(5)

NOTES

       Performance numbers are not accurate and are rounded up at the MB/sec. boundary.

SunOS 5.11							    21 Jun 2007 						      ndmpstat(1M)
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