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Groups > comp.os.linux.advocacy > #341259

Re: Linux Tmpfs Virtue

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Desk Rabbit <me@example.com> wrote:
> On 21/01/2016 13:11, owl wrote:
>> Desk Rabbit <me@example.com> wrote:
>>> On 21/01/2016 10:48, owl wrote:
>>>> Desk Rabbit <me@example.com> wrote:
>>>>> On 20/01/2016 19:23, owl wrote:
>>>>>> Desk Rabbit <me@example.com> wrote:
>>>>>>> On 19/01/2016 09:48, owl wrote:
>>>>>>>> Desk Rabbit <me@example.com> wrote:
>>>>>>>>> On 13/01/2016 13:31, John Gohde wrote:
>>>>>>>>>> On Tuesday, January 5, 2016 at 6:51:01 AM UTC-5, Desk Rabbit wrote:
>>>>>>>>>>> On 04/01/2016 19:58, Vile Strong wrote:
>>>>>>>>>>>> One of the highly useful capabilities of the Linux OS is
>>>>>>>>>>>> the tmpfs, which is a temporary file system located entirely
>>>>>>>>>>>> in RAM.
>>>>>>>>>>>>
>>>>>>>>>>>> The user can invoke a tmpfs any time and of any size with
>>>>>>>>>>>> the command:
>>>>>>>>>>>>
>>>>>>>>>>>> mount -t tmpfs -o size=XG,mode=0777 tmpfs /mount-point
>>>>>>>>>>>>
>>>>>>>>>>>> A tmpfs can be used for a variety of purposes, such as the speedy
>>>>>>>>>>>> compile of a large program or a very quick "scratch" storage
>>>>>>>>>>>> for very large data processing.
>>>>>>>>>>>>
>>>>>>>>>>>> Does Microsoft Windows have this capability?
>>>>>>>>>>>>
>>>>>>>>>>>> FUCK NO!!!!
>>>>>>>>>>>>
>>>>>>>>>>>> That's another testament to the superiority of Linux over
>>>>>>>>>>>> Microsoft.
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> And of course, your given example doesn't work
>>>>>>>>>>>
>>>>>>>>>>> [root@mail ~]# mount -t tmpfs -o size=XG,mode=0777 tmpfs /mnt/tmpfs
>>>>>>>>>>> mount: wrong fs type, bad option, bad superblock on tmpfs,
>>>>>>>>>>>              missing codepage or helper program, or other error
>>>>>>>>>>>              (for several filesystems (e.g. nfs, cifs) you might
>>>>>>>>>>>              need a /sbin/mount.<type> helper program)
>>>>>>>>>>>              In some cases useful info is found in syslog - try
>>>>>>>>>>>              dmesg | tail  or so
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> It's the size=XG that's wrong, you need to specify a number i.e. 1G for
>>>>>>>>>>> one gigabyte.
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> OR IF YOU HAD A BRAIN, rodent, the ue of an "X" script should have been self-explanatory.
>>>>>>>>>
>>>>>>>>> Oh do explain what an "X" script is in this context great Linux master.
>>>>>>>>>
>>>>>>>>> This should be good........
>>>>>>>>>
>>>>>>>>> :-)
>>>>>>>>>
>>>>>>>>
>>>>>>>> It can't possibly be as good as you running a command as root without
>>>>>>>> scrutinizing it first.  :)
>>>>>>>>
>>>>>>>
>>>>>>> On a throw away isolated VM based system? You find that entertaining?
>>>>>>> How odd.
>>>>>>>
>>>>>>
>>>>>> I find it entertaining that you did this on what appears to be a mail
>>>>>> server.  Even if it's just a lab VM for testing, it's probably more
>>>>>> important than a "throw away," and you shouldn't just blindly run
>>>>>> a command on it as root if you don't understand what the command does.
>>>>>
>>>>> Calling a machine "bigdick" doesn't make it a dildo.
>>>>>
>>>>
>>>> You gave a hostname of "mail" to a machine that is not a mail server?
>>>> Yeah, sure you did.  LOL.
>>>
>>> Whatever, the name tells you SFA about the function and the fact still
>>> remains that it was an isolated VM.
>>>
>>
>> Is it a mail server?  Yes or no.
>>
>>>>
>>>>>>
>>>>>>> How else could I display the error without running the command???
>>>>>>
>>>>>> You wouldn't get the error message if you had read the man page.
>>>>>> Or did you think that size was given in Roman numerals?
>>>>>>
>>>>>
>>>>> Reading the man page doesn't give a error output to illustrate an
>>>>> incorrect command line.
>>>>
>>>> Do you really expect a man page to illustrate the myriad ways a command
>>>> might be mistyped?  The program itself gave you an error output.  The man
>>>> page describes the return codes, which you can check with `echo $?`.
>>>>
>>>> Most importantly to this case though, the man page also tells you how
>>>> the "size=" option is used.  No mention of Roman numerals though.
>>>>
>>>
>>> Are you deliberately missing the point just so you can have an argument?
>>
>> Are you deliberately being Snittish in your refusal to just admit that
>> you ran a command as root without understanding what the command does?
>>
> 
> I ran a command that I am familiar with as root on an isolated VM system 

On a mail server VM.  Your refusal to admit this makes me wonder
if it really even is a VM.

> to provide a detailed output error to illustrate the incorrect nature of 
> an example given by a poster. Nothing more, nothing less. Everything 
> else is in your imagination or is pure supposition/assumption or a 
> deliberate attempt to miss the point to create conflict where none exists.

You keep claiming the example was "wrong."  The example was not "wrong"
just because "XG" was used to represent the size.  That's like saying
that this rsync example:

   rsync -av host:file1 :file2 host:file{3,4} /dest/

"doesn't work" as is on your system and therefore the commandline
is "wrong."

Your analysis of his example:

<quote>
And of course, your given example doesn't work
...
It's the size=XG that's wrong, you need to specify a number i.e. 1G for
one gigabyte.
</quote>

Funny but it looks like you changed the mount point in his example
from /mount-point to /mnt/tmpfs, and of course created the /mnt/tmpfs
directory, or it would not have worked as given anyway.  One wonders why
after going to all that trouble that you did not also make the change
from "size=XG" to a value that would work if, as you say, it is a command
that you "are familiar with."

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Thread

Re: Linux Tmpfs Virtue John Gohde <john.h.gohde@gmail.com> - 2016-01-13 05:31 -0800
  Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-18 10:34 +0000
    Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-19 09:48 +0000
      Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-20 15:07 +0000
        Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-20 19:23 +0000
          Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-21 09:44 +0000
            Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-21 10:48 +0000
              Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-21 11:05 +0000
                Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-21 13:11 +0000
                Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-21 16:52 +0000
                Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-21 18:30 +0000
                Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-22 09:47 +0000
                Re: Linux Tmpfs Virtue Peter Köhlmann <peter-koehlmann@t-online.de> - 2016-01-22 14:11 +0100
                Re: Linux Tmpfs Virtue Slimer <.m@nsn.s> - 2016-01-22 12:59 -0500
                Re: Linux Tmpfs Virtue Peter Köhlmann <peter-koehlmann@t-online.de> - 2016-01-22 22:33 +0100
                Re: Linux Tmpfs Virtue GreyCloud <mist@cumulus.com> - 2016-01-22 15:22 -0700
                Re: Linux Tmpfs Virtue Slimer <.m@nsn.s> - 2016-01-23 09:34 -0500
                Re: Linux Tmpfs Virtue chrisv <chrisv@nospam.invalid> - 2016-01-25 07:19 -0600
                Re: Linux Tmpfs Virtue DFS <nospam@dfs.com> - 2016-01-25 08:59 -0500
                Re: Linux Tmpfs Virtue "Ezekiel" <zeke@nosuchemail.com> - 2016-01-25 10:22 -0500
                Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-25 14:58 +0000
                Re: Linux Tmpfs Virtue "Ezekiel" <zeke@nosuchemail.com> - 2016-01-25 11:23 -0500
                Re: Linux Tmpfs Virtue Peter Köhlmann <peter-koehlmann@t-online.de> - 2016-01-25 18:38 +0100
                Re: Linux Tmpfs Virtue Slimer <.m@nsn.s> - 2016-01-25 12:52 -0500
                Re: Linux Tmpfs Virtue "Ezekiel" <zeke@nosuchemail.com> - 2016-01-25 16:58 -0500
                Re: Linux Tmpfs Virtue Slimer <.m@nsn.s> - 2016-01-25 17:35 -0500
                Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-26 18:39 +0000
                Re: Linux Tmpfs Virtue Snit <usenet@gallopinginsanity.com> - 2016-03-22 11:35 -0700
      Re: Linux Tmpfs Virtue DFS <nospam@dfs.com> - 2016-01-25 10:24 -0500
        Re: Linux Tmpfs Virtue Desk Rabbit <me@example.com> - 2016-01-25 15:36 +0000
          Re: Linux Tmpfs Virtue DFS <nospam@dfs.com> - 2016-01-25 11:18 -0500
            Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-26 15:58 +0000
          Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-26 17:16 +0000
        Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-26 15:54 +0000
          Re: Linux Tmpfs Virtue DFS <nospam@dfs.com> - 2016-01-26 14:09 -0500
            Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-26 21:16 +0000
              Re: Linux Tmpfs Virtue Slimer <a.m@unseen.is.invalid> - 2016-01-26 17:17 -0500
                Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-26 23:20 +0000
                Re: Linux Tmpfs Virtue GreyCloud <mist@cumulus.com> - 2016-01-27 12:11 -0700
                Re: Linux Tmpfs Virtue owl <owl@rooftop.invalid> - 2016-01-27 21:26 +0000

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