Is UNIX an open source OS ? Post: 302911211

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Operating Systems Linux Fedora Is UNIX an open source OS ? Post 302911211 by sreyan32 on Wednesday 30th of July 2014 02:04:59 PM

07-30-2014

Registered User

Quote:

Originally Posted by Corona688

The terminal device is a serial port -- either a real, physical serial port, or an emulated one(i.e, a vterm). Any proper terminal in UNIX, even a graphical one, will use one.

This is because UNIX serial devices come with lots and lots and lots of built-in software features. Have you ever hit ctrl-C to kill a stuck program? The serial port, even an emulated one in a GUI, does that directly. It has a "send SIGINT when you hit this key" setting.

I am sorry for being blunt first of all. But what you said makes absolutely no sense to me. Why would a terminal need a serial port to function ? Also I have used the terminal in both Debian and Fedora distributions. I have never made any connection to any serial port before using them !
Why would I need to do so ? OSes like Windows also offer ctrl+c combination to kill the program(not that I like comparing Windows and UNIX I am just trying to get my point across). And what do you mean by it does that directly ? How can a serial port send signals to the CPU ?

I am sorry but I don't understand what you are saying probably because I am starting out with UNIX. Do you think I should post a separate thread about this topic dealing with serial ports and terminal devices ? Because its getting off topic here.

Quote:

Originally Posted by Corona688

Imagine you're running out of space on drive C in Windows, and add another hard drive to deal with it. Now you have a drive D with lots of space -- which is no help at all since C is where you need it.

In UNIX, you could attach the new drive's partitions wherever you wanted -- /home/ for example, if that particular folder is very big.

If I am not mistaken you mean that you can move around partitions right ? For example I can unmount the /home partition and put it in a different hard disk all together and use it from there right ?
But then why would you call it "partition nesting" ? because that sounds a partition within another partition.

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LEARN ABOUT MOJAVE

nsd-xfer

nsd-xfer(8)                                                         nsd 3.2.12                                                         nsd-xfer(8)

NAME

       nsd-xfer - AXFR client to transfer zones from a name server

SYNOPSIS

       nsd-xfer [-4] [-6] [-a address[@port]] [-p port] [-s serial] [-T tsiginfo] [-v] -z zone -f file servers

DESCRIPTION

       Nsd-xfer is program to transfer zones from a name server using AXFR.  NSD is a complete implementation of an authoritative DNS nameserver.

OPTIONS

       -4     Only send to IPv4 addresses.

       -6     Only send to IPv6 addresses.

       -a address[@port]
              Specify the source address (and port) to send from.

       -f file
              The file to store the zone in.

       -p port
              Specify the port to send to.

       -s serial
              Specify the serial of the current zone. The zone is only transferred if the master server has a zone with a greater serial number.

       -T tsiginfo
              Use  TSIG  to verify the zone transfer. The tsiginfo file must contain the TSIG key information. The file is removed upon successful
              reading of the key. The format of the tsiginfo file is described in the doc/README file (section 3.3).

       -v     Be more verbose.

       -z zone
              Specify the zone to receive.

       servers
              List of nameservers to try.

EXAMPLES

       To run this program the standard way type:

       # nsd-xfer -z foobar.cz -f foobar.cz.zone 1.2.3.4

SEE ALSO

       nsd(8), nsdc(8), nsd.conf(5), nsd-checkconf(8), nsd-notify(8), nsd-patch(8), zonec(8)

AUTHORS

       NSD was written by NLnet Labs and RIPE NCC joint team. Please see CREDITS file in the distribution for further details.

NLnet Labs                                                         jul 19, 2012                                                        nsd-xfer(8)