Is UNIX an open source OS ? Post: 302911911

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Operating Systems Linux Fedora Is UNIX an open source OS ? Post 302911911 by bakunin on Monday 4th of August 2014 12:23:45 PM

08-04-2014

Registered User

Quote:

Originally Posted by sreyan32

Could you elaborate on this point further. I mean if no one conformed to a standard how on earth is that standard still surviving. And also why is it there ??

For the same reason why there is a OSI-reference protocol stack which is (almost) nowhere implemented. It is an ideal against which each "real existing implementation" is measured. Even if no implementation fully conforms to it every one is - at least in theory - striving to do so and asymptotically converging towards it.

Take the OSI-reference model for networks as an example: to my knowledge the whole seven layers of it where only once being implemented (in some obscure DEC network stack working under VMS), but every network protocol is compared against it and we say that "IP is a layer-3 protocol", even though TCP/IP was not built with the OSI reference model in mind and in fact - from a theoretical POV - really covers only the layers 3, 4 and 5.

I hope this helps.

bakunin

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LEARN ABOUT XFREE86

dpkg-reconfigure

DPKG-RECONFIGURE(8)                                                   Debconf                                                  DPKG-RECONFIGURE(8)

NAME

       dpkg-reconfigure - reconfigure an already installed package

SYNOPSIS

        dpkg-reconfigure [options] packages

DESCRIPTION

       dpkg-reconfigure reconfigures packages after they have already been installed. Pass it the names of a package or packages to reconfigure.
       It will ask configuration questions, much like when the package was first installed.

       If you just want to see the current configuration of a package, see debconf-show(1) instead.

OPTIONS

       -ftype, --frontend=type
           Select the frontend to use. The default frontend can be permanently changed by:

            dpkg-reconfigure debconf

           Note that if you normally have debconf set to use the noninteractive frontend, dpkg-reconfigure will use the dialog frontend instead,
           so you actually get to reconfigure the package.

       -pvalue, --priority=value
           Specify the minimum priority of question that will be displayed.  dpkg-reconfigure normally shows low priority questions no matter what
           your default priority is. See debconf(7) for a list.

       --default-priority
           Use whatever the default priority of question is, instead of forcing the priority to low.

       -u, --unseen-only
           By default, all questions are shown, even if they have already been answered. If this parameter is set though, only questions that have
           not yet been seen will be asked.

       --force
           Force dpkg-reconfigure to reconfigure a package even if the package is in an inconsistent or broken state. Use with caution.

       --no-reload
           Prevent dpkg-reconfigure from reloading templates. Use with caution; this will prevent dpkg-reconfigure from repairing broken templates
           databases.  However, it may be useful in constrained environments where rewriting the templates database is expensive.

       -h, --help
           Display usage help.

SEE ALSO

       debconf(7)

AUTHOR

       Joey Hess <joeyh@debian.org>

                                                                    2018-02-28                                                 DPKG-RECONFIGURE(8)