There are two purposes for a fork().
The basics is that when a process issues a fork command, it will clone
itself in memory and two separate processes will run from there. The
forked process will be a child of the forking process.
This parent child relationship is important for one of the purposes of the
fork. In systems that use SysV startup processes (and this really needs to
go away), a process will fork, then the parent will die. This causes the
child to attach to either the shell process that started the parent, or PID
1. This is how processes become daemons in SysV based systems (SystemD
does not require any of this nonsense).
The other more proper use of the fork, the parent does not die. Now you
have two processes executing the same code. A program can now be
multi-processing. This is not be be confused with "Threads", which are one
process but multiple threads of code running in parallel. Forking produces
multiple independent processes.
So, forking the mount -a command will cause all mont processes to happen in
parallel instead of in serial.
Hope this explains.
Kevin F
On Dec 12, 2015 12:21 PM, "Michael Havens" <
bmike1@gmail.com> wrote:
> what is the purpose of forking a mount? Maybe I misunderstand what they
> mean by 'fork'.
>
> On Sat, Dec 12, 2015 at 8:48 AM, Keith Smith <techlists@phpcoderusa.com>
> wrote:
>
>>
>> Yeah, looks like it reads the fstab only.
>>
>> mount -a [-t type] [-O optlist]
>>
>> (usually given in a bootscript) causes all filesystems mentioned in
>> fstab (of the proper type and/or having or not having the proper options)
>> to be mounted as indicated, except for those whose line contains the noauto
>> keyword. Adding the -F option will make mount fork, so that the filesystems
>> are mounted simultaneously.
>>
>> ...
>>
>>
>> http://linux.die.net/man/8/mount
>>
>>
>> On 2015-12-11 07:49, Michael Havens wrote:
>>
>>> I just tried 'mount -a' and that didn't do it.
>>>
>>> On Fri, Dec 11, 2015 at 9:47 AM, Michael Havens <bmike1@gmail.com>
>>> wrote:
>>>
>>> well.... I want to remount the drive w/o opening a terminal. I plug
>>>> anexternal drive in and it appears in a filemanager. I then click
>>>> the eject button and it umounts. I then realize I forgot to do
>>>> something and I don't know what to do except to unplug and plug it
>>>> back in or open the terminal and type 'mount -a' (thanks for
>>>> teaching me that).
>>>>
>>>> On Fri, Dec 11, 2015 at 8:34 AM, Keith Smith
>>>> <techlists@phpcoderusa.com> wrote:
>>>>
>>>> Try this :
>>>>
>>>>
>>> http://www.shellhacks.com/en/HowTo-Remount-etc-fstab-Without-Reboot-in-Linux
>>>
>>>> [1]
>>>>
>>>> On 2015-12-10 19:32, Michael Havens wrote:
>>>>
>>>> I've been wondering about this for awhile now; when you plug a
>>>> device
>>>> in a file manager opens and the device auto mounts (or it auto
>>>> mounts
>>>> and then the device manager opens). You do what you need to and
>>>> then
>>>> click the eject symbol next to said device and it unmounts. How do
>>>> you
>>>> mount it again without unplugging it again or opening a terminal?
>>>>
>>>> --
>>>>
>>>> :-)~MIKE~(-:
>>>>
>>>> ---------------------------------------------------
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>>>> To subscribe, unsubscribe, or to change your mail settings:
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>>>>
>>>> --
>>>> Keith Smith
>>>>
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>>>>
>>>
>>> --
>>>
>>> :-)~MIKE~(-:
>>>
>>> --
>>>
>>> :-)~MIKE~(-:
>>>
>>>
>>> Links:
>>> ------
>>> [1]
>>> http://www.shellhacks.com/en/HowTo-Remount-etc-fstab-Without-Reboot-in-Linux
>>> [2] http://lists.phxlinux.org/mailman/listinfo/plug-discuss
>>>
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>>>
>>
>> --
>> Keith Smith
>> ---------------------------------------------------
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>>
>
>
>
> --
> :-)~MIKE~(-:
>
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> To subscribe, unsubscribe, or to change your mail settings:
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