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e2fsck detail check

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  e2fsck detail check Jude DaShiell <jdashiel@panix.com> - 2018-12-29 19:30 +0100
    Re: e2fsck detail check Grzesiek Sójka <pld@sojka.co> - 2018-12-29 20:00 +0100
    Re: e2fsck detail check David <bouncingcats@gmail.com> - 2018-12-30 00:20 +0100
      Re: e2fsck detail check Jude DaShiell <jdashiel@panix.com> - 2018-12-30 08:50 +0100

#203714 — e2fsck detail check

I have a question about the -c fd command line switch.  Would the valid
options for fd be stdin stdout and stderr?
I may need to provide remote support for someone and it will be helpful if
e2fsck can show completion percentage as any repair happens.



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#203716

On 12/29/18 7:20 PM, Jude DaShiell wrote:
> I have a question about the -c fd command line switch.  Would the valid
> options for fd be stdin stdout and stderr?
> I may need to provide remote support for someone and it will be helpful if
> e2fsck can show completion percentage as any repair happens.

I use -C 0 (the capital "C")

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Grzesiek

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#203723

On Sun, 30 Dec 2018 at 05:20, Jude DaShiell <jdashiel@panix.com> wrote:
>
> I have a question about the -c fd command line switch.  Would the valid
> options for fd be stdin stdout and stderr?

The file descriptor fd is a number. It is defined by the parent process.
The parent process is typically the shell you use to start e2fsck
interactively, or the shell script that starts e2fsck.

You can read about file descriptors here:
http://mywiki.wooledge.org/FileDescriptor

The e2fsck man page also explains that if you precede the
fd number with a minus sign, then e2fsck will defer writing to the
file descriptor until it receives a SIGUSR1 signal. This is a
extra feature specific to e2fsck that has nothing to do
with file descriptors in general.

You can read about signals here:
http://mywiki.wooledge.org/SignalTrap

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#203730

Thanks much, highly informative.
On Sun, 30 Dec 2018, David wrote:

> Date: Sat, 29 Dec 2018 18:18:41
> From: David <bouncingcats@gmail.com>
> To: debian-user <debian-user@lists.debian.org>
> Subject: Re: e2fsck detail check
> Resent-Date: Sat, 29 Dec 2018 23:19:07 +0000 (UTC)
> Resent-From: debian-user@lists.debian.org
>
> On Sun, 30 Dec 2018 at 05:20, Jude DaShiell <jdashiel@panix.com> wrote:
> >
> > I have a question about the -c fd command line switch.  Would the valid
> > options for fd be stdin stdout and stderr?
>
> The file descriptor fd is a number. It is defined by the parent process.
> The parent process is typically the shell you use to start e2fsck
> interactively, or the shell script that starts e2fsck.
>
> You can read about file descriptors here:
> http://mywiki.wooledge.org/FileDescriptor
>
> The e2fsck man page also explains that if you precede the
> fd number with a minus sign, then e2fsck will defer writing to the
> file descriptor until it receives a SIGUSR1 signal. This is a
> extra feature specific to e2fsck that has nothing to do
> with file descriptors in general.
>
> You can read about signals here:
> http://mywiki.wooledge.org/SignalTrap
>
>

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