Dividing large numbers 1

[rgaskill1]

Hi,
I am trying to modify a script to convert a file size in bytes to Mb.

I have tried using let for this, but this doesn't seem to work for large numbers, eg:-

x=34358697984
let y=$x/1048576
echo $y
0

Is there another way of doing this?

Regards
Richard

 

[mrn]

try pipe bc

echo "4343434343434/1024" | bc

Mike

"Whenever I dwell for any length of time on my own shortcomings, they gradually begin to seem mild, harmless, rather engaging little things, not at all like the staring defects in other people's characters."

 

[PHV]

What about this ?
x=34358697984
y=$(awk 'BEGIN{print '$x'/1048576}')
echo $y

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[SamBones]

In Korn shell...

x=34358697984
(( x /= 1048576 ))
print $x

 

[PHV]

In Korn shell
In fact, in ksh-93 ...

 

[mrn]

btw ksh-93 will do floating point

Mike

"Whenever I dwell for any length of time on my own shortcomings, they gradually begin to seem mild, harmless, rather engaging little things, not at all like the staring defects in other people's characters."