Path: csiph.com!xmission!news.alt.net!not-for-mail
From: owl <owl@rooftop.invalid>
Newsgroups: comp.os.linux.advocacy
Subject: Re: Linux Tmpfs Virtue
Date: Thu, 21 Jan 2016 10:48:54 +0000 (UTC)
Organization: O.W.L.
Lines: 89
Message-ID: <ghdjs03.afe93@rooftop.invalid>
References: <n6eiu34hjn@news4.newsguy.com> <n6gahv$pao$1@deskrabbit.motzarella.org> <4150ecf6-8562-4f49-be9f-c5ecbda17c94@googlegroups.com> <n7ieu1$7cn$1@deskrabbit.motzarella.org> <ghsjd93.fjkd@rooftop.invalid> <n7o7lj$i49$1@deskrabbit.motzarella.org> <thjgdu82f.kfia@rooftop.invalid> <n7q958$g18$1@deskrabbit.motzarella.org>
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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.

>>
>>> 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.