65 thousand dollar question Post: 84752

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The Lounge What is on Your Mind? 65 thousand dollar question Post 84752 by rhfrommn on Wednesday 28th of September 2005 11:29:09 AM

09-28-2005

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Commercial-grade unix is intended for companies to use for their critical business functions, not for hobbyists or home users. That is the context you need to be thinking of when you see those prices.

For example, at one of my previous jobs we ran a database for one of our clients. That database had details on over 10 million of their customers and hundreds of millions of rows of data. The needed access to it almost 24/7 with 100% uptime except for scheduled outages. It ran on a half-million dollar server and had terabytes of expensive EMC disk arrays behind it. Paying thousands of dollars for a stable, secure, high-availablity OS is not even an issue in a situation like that. The cost of the OS is a drop in the bucket compared to the hardware, software licensing (oracle in this case) and penalties we would have had to pay for not meeting service level agreements due to outages.

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uuidgen

UUIDGEN(1)							   User Commands							UUIDGEN(1)

NAME

       uuidgen - create a new UUID value

SYNOPSIS

       uuidgen [options]

DESCRIPTION

       The uuidgen program creates (and prints) a new universally unique identifier (UUID) using the libuuid(3) library.  The new UUID can reason-
       ably be considered unique among all UUIDs created on the local system, and among UUIDs created on other systems in  the	past  and  in  the
       future.

       There  are two types of UUIDs which uuidgen can generate: time-based UUIDs and random-based UUIDs.  By default uuidgen will generate a ran-
       dom-based UUID if a high-quality random number generator is present.  Otherwise, it will choose a time-based UUID.  It is possible to force
       the generation of one of these two UUID types by using the -r or -t options.

OPTIONS

       -r, --random
	      Generate	a  random-based UUID.  This method creates a UUID consisting mostly of random bits.  It requires that the operating system
	      have a high quality random number generator, such as /dev/random.

       -t, --time
	      Generate a time-based UUID.  This method creates a UUID based on the system clock plus the system's ethernet  hardware  address,	if
	      present.

       -h, --help
	      Display help text and exit.

       -V, --version
	      Display version information and exit.

CONFORMING TO

       OSF DCE 1.1

AUTHOR

       uuidgen was written by Andreas Dilger for libuuid.

SEE ALSO

       libuuid(3)

AVAILABILITY

       The uuidgen command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux							     June 2011								UUIDGEN(1)