Question as to whether Ubuntu or UbuntuMATE is 32 bit

[Bret Busby]

On Sun, 2 Sep 2018, Bret Busby wrote:

> Date: Sun, 2 Sep 2018 04:52:20
> From: Bret Busby <bret at busby.net>
> Reply-To: "Ubuntu user technical support, not for general discussions"
>     <ubuntu-users at lists.ubuntu.com>
> To: "Ubuntu user technical support, not for general discussions"
>     <ubuntu-users at lists.ubuntu.com>
> Subject: Re: Question as to whether Ubuntu or UbuntuMATE is 32 bit
> 
> On Sun, 2 Sep 2018, Bret Busby wrote:
>
>> Date: Sun, 2 Sep 2018 04:34:48
>> From: Bret Busby <bret.busby at gmail.com>
>> Reply-To: "Ubuntu user technical support, not for general discussions"
>>     <ubuntu-users at lists.ubuntu.com>
>> To: ubuntu-users at lists.ubuntu.com
>> Subject: Question as to whether Ubuntu or UbuntuMATE is 32 bit
>> 
>> I have read, regarding RISC OS, that
>> 
>> "
>> The file system abstraction layer API uses 32-bit file offsets, making
>> the largest single file 4 GiB (minus 1 byte) long.
>> "
>> 
>> - https://en.wikipedia.org/wiki/RISC_OS
>> 
>> Now, that makes me wonder whether Ubuntu Linux, or, UbuntuMATE Linux,
>> is limited to 32 bit.
>> 
>> The reason that this has arisen, is that I have a 4.5GB file that I
>> can not move - I have tried to move (using cut and paste) the file,
>> using both caja and PCManFM, and, with both, I get the problem that
>> the file is "too large to be spliced", and, a filesize limit of 4GB
>> apparently applies
>> 
>> So, is Ubuntu Linux, or, UbuntuMATE Linux, is limited to 32 bit, or,
>> are the file managers limited to 32 bit operations?
>> 
>> The computer has an i3 CPU and 16GB of RAM.
>> 
>> The computer is running UbuntuMATE 16.04 AMD64, as far as I am aware.
>> 
>
> "
> bret at bret-Inspiron-580-UbuntuMATE:~$ uname -a
> Linux bret-Inspiron-580-UbuntuMATE 4.4.0-133-generic #159-Ubuntu SMP Fri Aug 
> 10 07:31:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
> bret at bret-Inspiron-580-UbuntuMATE:~$ uname -aip
> Linux bret-Inspiron-580-UbuntuMATE 4.4.0-133-generic #159-Ubuntu SMP Fri Aug 
> 10 07:31:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
> bret at bret-Inspiron-580-UbuntuMATE:~$ uname -ip
> x86_64 x86_64
> "
>

PCManFM shows the total filesize (that is too big) as
4.2 GiB (4,526,198,136 bytes)

and the space taken up by it on the disk, as
4.2 GiB (4,530,634,752 bytes)

and, the quantity of it, that it managed to move, as
4.0 GiB (4,294,967,295 bytes)

with the space that that takes on the drive, as
4.0 GiB (4,294,967,296 bytes)
being 1 byte more than it shifted.

PCManFM shows the same values (to the byte) for the file that resulted 
from being moved by caja.

As the move was not completed, in each instance, the source file remains 
where it was; all of it.

The data that was moved, can be opened, so I assume that each file 
manager truncated, when it got to its apparent 32 bit limit.

--
Bret Busby
Armadale
West Australia
..............

"So once you do know what the question actually is,
  you'll know what the answer means."
- Deep Thought,
   Chapter 28 of Book 1 of
   "The Hitchhiker's Guide to the Galaxy:
   A Trilogy In Four Parts",
   written by Douglas Adams,
   published by Pan Books, 1992
....................................................
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