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Top Forums Shell Programming and Scripting How to convert hex numbers to decimal ? Post 302297227 by jack2 on Thursday 12th of March 2009 06:58:59 PM
Old 03-12-2009
How to convert hex numbers to decimal ?

Hi,

please tell me how to convert hex number to decimal

000000E7
000000000002640D
0000000000025B16

and seconds to minutes, hours, days, months, years
bytes to kbytes, mbytes , gbytes

read the following examples
while read a b
do
printf "%5d %5d\n" "0x$a" "0x$b"
done < "$FILE"
#!/bin/ksh
# this does the math
echo "c1:41 c2:0x0000.00046b3e" | awk -F[:\.] '{ print $3, $4}' | read one two
result=$( printf "%d + %d" $one 0x"$two")
echo $result
result=$( printf "%d + %d" 0x0x000 0x00046b3e ) # check
echo $result
printf "%d\n" "0x00046b3"
but I would like to learn syntax either
as in my case, the last line generated -1

thanks

Jack
 

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Time::Seconds(3pm)					 Perl Programmers Reference Guide					Time::Seconds(3pm)

NAME
Time::Seconds - a simple API to convert seconds to other date values SYNOPSIS
use Time::Piece; use Time::Seconds; my $t = localtime; $t += ONE_DAY; my $t2 = localtime; my $s = $t - $t2; print "Difference is: ", $s->days, " "; DESCRIPTION
This module is part of the Time::Piece distribution. It allows the user to find out the number of minutes, hours, days, weeks or years in a given number of seconds. It is returned by Time::Piece when you delta two Time::Piece objects. Time::Seconds also exports the following constants: ONE_DAY ONE_WEEK ONE_HOUR ONE_MINUTE ONE_MONTH ONE_YEAR ONE_FINANCIAL_MONTH LEAP_YEAR NON_LEAP_YEAR Since perl does not (yet?) support constant objects, these constants are in seconds only, so you cannot, for example, do this: "print ONE_WEEK->minutes;" METHODS
The following methods are available: my $val = Time::Seconds->new(SECONDS) $val->seconds; $val->minutes; $val->hours; $val->days; $val->weeks; $val->months; $val->financial_months; # 30 days $val->years; $val->pretty; # gives English representation of the delta The usual arithmetic (+,-,+=,-=) is also available on the objects. The methods make the assumption that there are 24 hours in a day, 7 days in a week, 365.24225 days in a year and 12 months in a year. (from The Calendar FAQ at http://www.tondering.dk/claus/calendar.html) AUTHOR
Matt Sergeant, matt@sergeant.org Tobias Brox, tobiasb@tobiasb.funcom.com BalXzs SzabX (dLux), dlux@kapu.hu LICENSE
Please see Time::Piece for the license. Bugs Currently the methods aren't as efficient as they could be, for reasons of clarity. This is probably a bad idea. POD ERRORS
Hey! The above document had some coding errors, which are explained below: Around line 245: Non-ASCII character seen before =encoding in 'BalXzs'. Assuming UTF-8 perl v5.18.2 2014-01-06 Time::Seconds(3pm)
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