Most common version of UNIX on production systems Post: 302091898

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Top Forums UNIX for Dummies Questions & Answers Most common version of UNIX on production systems Post 302091898 by jim mcnamara on Thursday 5th of October 2006 05:06:36 PM

10-05-2006

Registered User

We have 180+ UNIX boxes, >140 of them are Linux. We have a few Solaris 2.9 boxes.
What you should teach (aside from admin tools which differ a lot) is POSIX stuff as much as possible - POSIX C, scripting, etc. Wherever your platform deviates significantly from the norm you need to let students know what the norm (POSIX or XSI) is. And, the common shells on production boxes are Bourne, Bourne-again (bash), csh, ksh, then tcsh. (Steven's Advanced Unix Programming 2ed p 3).

However, consider teaching either Bourne or bash, not csh or tenex csh because those are so, um, "tricky", that platforms like FreeBSD and Darwin that have tcsh as their default shell, use Bourne for system scripts. Solaris comes default with all of the shells.

jim mcnamara

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uuid

UUID(3) 							    Libuuid API 							   UUID(3)

NAME

       uuid - DCE compatible Universally Unique Identifier library

SYNOPSIS

       #include <uuid/uuid.h>

DESCRIPTION

       The UUID library is used to generate unique identifiers for objects that may be accessible beyond the local system.  This library generates
       UUIDs compatible with those created by the Open Software Foundation (OSF) Distributed Computing Environment (DCE) utility uuidgen.

       The UUIDs generated by this library can be reasonably expected to be unique within a system, and unique across all systems.  They could	be
       used, for instance, to generate unique HTTP cookies across multiple web servers without communication between the servers, and without fear
       of a name clash.

CONFORMING TO

       OSF DCE 1.1

AUTHOR

       Theodore Y. Ts'o

AVAILABILITY

       libuuid is part of the util-linux-ng package since version 2.15.1 and is  available  from  ftp://ftp.kernel.org/pub/linux/utils/util-linux-
       ng/.

SEE ALSO

       uuid_clear(3), uuid_compare(3), uuid_copy(3), uuid_generate(3), uuid_is_null(3), uuid_parse(3), uuid_time(3), uuid_unparse(3)

util-linux-ng							     May 2009								   UUID(3)