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Full Discussion: How to convert hex numbers to decimal ?
Top Forums Shell Programming and Scripting How to convert hex numbers to decimal ? Post 302297432 by pludi on Friday 13th of March 2009 10:53:45 AM
Old 03-13-2009
Please use [ code ][ /code ] (sans the space) for code/logs/listings/...
Code:
$ TIME=$( date +%s )
$ LANG=C date -ud @`echo $TIME`
Fri Mar 13 14:37:15 UTC 2009
$ SEC=$(( ${TIME} % 60 ))
$ MIN=$(( ${TIME} % 3600 / 60 ))
$ HR=$(( ${TIME} % (3600*24) / 3600 ))
$ echo $HR $MIN $SEC
14 37 15
$
$
$ SIZE=$(( 200*1024*1024 ))
$ KB=$(( ${SIZE} / 1024 ))
$ MB=$(( ${SIZE} / 1024 / 1024 ))
$ GB=$(( ${SIZE} / 1024 / 1024 / 1024 ))
$ BITS=$(( ${SIZE} * 8 ))
$ echo $GB $MB $KB $SIZE $BITS
0 200 204800 209715200 1677721600
$

This code worked both on Linux/HP-UX using bash/ksh on both (except for the second date call, HP-UX' date doesn't like the -d switch). As for the Base-16 to Base-10 conversion, it's probably easier to do that in Perl than to code in in the shell.
 

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LEARN ABOUT DEBIAN

timetrans

TIMETRANS(1p)						User Contributed Perl Documentation					     TIMETRANS(1p)

NAME

       timetrans - Converts time into time

SYNOPSIS

	 timetrans [units-options] [-count]

DESCRIPTION

       timetrans converts time from one type of unit to another.  If any of the units options are specified, then timetrans will convert those
       time units into the number of seconds to which they add up.  If given the count option, timetrans will convert that number of seconds into
       the appropriate number of weeks, days, hours, minutes, and seconds.  The converted result is printed out.  Units options cannot be
       specified in the same execution as the count option, and vice versa.

       timetrans is intended for use with DNSSEC-Tools, for calculating a zone's expiration time.

OPTIONS

   Units Options
       The converted value of each unit is totaled and a single result printed.

       -seconds seconds
	   Count of seconds to convert to seconds.

       -minutes minutes
	   Count of minutes to convert to seconds.

       -hours hours
	   Count of hours to convert to seconds.

       -days days
	   Count of days to convert to seconds.

       -weeks weeks
	   Count of weeks to convert to seconds.

   Count Option
       The specified seconds count is converted to the appropriate number of weeks, days, hours, minutes, and seconds.

       -count seconds
	   Count of seconds to convert to the appropriate set of units.

   Other Options
       timetrans has the following miscellaneous options.

       -Version
	   Displays the version information for timetrans and the DNSSEC-Tools package.

EXAMPLES

       Example 1:  Converting 5 days into seconds

	   $(42)> timetrans -days 5
	   432000

       Example 2:  Converting 2 weeks into seconds

	   $(43)> timetrans -w 2
	   1209600

       Example 3:  Converting 8 days and 8 hours into seconds

	   $(44)> timetrans -d 8 -hours 8
	   720000

       Example 4:  Converting 1 week, 1 day, and 8 hours into seconds

	   $(46)> timetrans -w 1 -days 1 -h 8
	   720000

       Example 5:  Converting 14 weeks, 4 days, 21 hours, 8 minutes, and 8 seconds into seconds

	   $(47)> timetrans -w 14 -d 4 -h 21 -m 8 -s 8
	   8888888

       Example 6:  Converting 720000 seconds into time units

	   $(48)> timetrans -c 720000
	   1 week, 1 day, 8 hours

       Example 7:  Converting 1814421 seconds into time units

	   $(49)> timetrans -c 1814421
	   3 weeks, 21 seconds

       Example 8:  Converting 8888888 seconds into time units

	   $(50)> timetrans -c 8888888
	   14 weeks, 4 days, 21 hours, 8 minutes, 8 seconds

COPYRIGHT

       Copyright 2004-2012 SPARTA, Inc.  All rights reserved.  See the COPYING file included with the DNSSEC-Tools package for details.

AUTHOR

       Wayne Morrison, tewok@tislabs.com

SEE ALSO

       zonesigner(8)

       Net::DNS::SEC::Tools::timetrans.pm(3)

perl v5.14.2							    2012-06-21							     TIMETRANS(1p)
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