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Top Forums UNIX for Dummies Questions & Answers Python... Post 302821897 by bakunin on Sunday 16th of June 2013 03:14:38 AM

06-16-2013

Registered User

Quote:

Originally Posted by wisecracker

1) Is the Python language now considered a part of the *NIX transient command structure much like Perl, (and awk)?

This question sounds like "are cars usually red"? There are without a doubt a lot of red cars, but this means nothing if you what to know if this specific car is red or not. What you are interested in is, if the software is installed on the specific system you want to run some script on. If some other systems have it or not doesn't matter.

What "UNIX" constitutes is defined in the "Single Unix Specification", the "POSIX" specification and similar documents. Today a UNIX system is not required to use some specific (AT&T-) code, but to react in a (thusly) specified way. "awk" is part of this specification, "perl" is not. And neither is "python". If you want to write portable scripts you should consider using the POSIX shell (which resembles mostly the ksh88).

Quote:

Originally Posted by wisecracker

2) If so which OSes now have it as part of a "default" install - NOT an extra to be downloaded from repositories at a later date.

The system i use most - AIX - definitely doesn't have it in the default install and for AIX - as well as any other systems i use - the term "default install" is meaningless. When i install a production system i use a carefully crafted absolute-minimum-image ("golden image") and install of this what is needed. What can be expected because of the POSIX specification is there (all tools listed as "mandatory"), but not more. Everything installed will have to be maintained, can break, etc. and if you have thousands of systems in a data center (quite the common case) you want to keep the things which can break at an absolute minimum.

I hope this helps.

bakunin

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LEARN ABOUT OPENSOLARIS

install-solaris

install-solaris(1M)                                                                                                            install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris  invokes  the  Solaris  Install  program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

           Minimum physical memory for all installation types

       128 MB

           Minimum physical memory required for windowing system

       384 MB

           Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

           Minimum physical memory for all installation types

       256 MB

           Minimum physical memory required for windowing system

       512 MB

           Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris  exists  only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcdrom  (Solaris instal-  |
       |                             |lation media)                |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

                                                                    23 Sep 2005                                                install-solaris(1M)