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Top Forums UNIX for Beginners Questions & Answers Substitute a character with sed Post 303032329 by stomp on Friday 15th of March 2019 10:08:39 AM
Old 03-15-2019
Maybe the Standards-Part should be separated from the thread? (Last time I requested Thread separation there was a broken thread afterwards in the forum, which might have nothing to do with that, but I just wanted to mention).

--- Post updated at 03:08 PM ---

I would throw in another question:

Does POSIX contain a programming language environment?
Is there a programming language available in every environment?

In contrast to Linux the situation of HP-UX,Solaris,AIX, ... in terms of easy available and easy installable software for me(as linux-only-user) seems like the availablity of water in the ocean and the desert.

So I'm wondering if there is any programming language installed in those unices so there maybe one programming environment available everywhere. I'm not talking about sh/ksh/bash. I do not consider them as real programming language. Yes, one can write very large shell scripts, but I think it's a mess. Bad maintainability. Slow Speed. High Resource Footprint(New process creatings for most things). Unsafe Programming environment. Inferior programming feature set.

I would imagine perl 5(perl 5 is 25 years old now. Having perl means: just the perl-base, no modules) could be everywhere. Despite being the opposite of my favourite programming language, if I had/wanted to write portable code, perl would be a lot better than any shell. The developer of inxi(hardware information tool,Inxi at github) went that way - inxi a 20,000 line perl script - written targeted at very high compatibility(Before switching to perl he had used bash and gnu awk).

Last edited by stomp; 03-15-2019 at 11:31 AM..
 

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PDL(3)							User Contributed Perl Documentation						    PDL(3)

NAME
PDL - the Perl Data Language DESCRIPTION
(For the exported PDL constructor, pdl(), see PDL::Core or pdl[2]) PDL is the Perl Data Language, a perl extension that is designed for scientific and bulk numeric data processing and display. It extends perl's syntax and includes fully vectorized, multidimensional array handling, plus several paths for device-independent graphics output. For basic information on the PDL language, see the pdl(1) (lowercase) man page. You can run PDL programs directly as perl scripts that include the PDL module (with "use PDL;"), or via an interactive shell (see the perldl(1) man page). The PDL language extension includes about a dozen perl modules that form the core of the language, plus additional modules that add further functionality. The perl module "PDL" loads all of the core modules automatically, making their functions available in the current perl namespace. See also PDL::Lite or PDL::LiteF if start-up time becomes an issue. EXPORTS: "use PDL;" exports a large number of routines into the calling namespace. If you want to avoid namespace pollution, you must instead "use PDL::Lite", and include any additional modules explicitly. NICESLICE: Note that the PDL::NiceSlice syntax is NOT automatically loaded by "use PDL;". If you want to use the extended slicing syntax in a standalone script, you must also say "use PDL::NiceSlice;". PDL::Math: The PDL::Math module has been added to the list of modules for versions later than 2.3.1. Note that PDL::Math is still not included in the Lite and LiteF start-up modules. SYNOPSIS
use PDL; # Is equivalent to the following: use PDL::Core; use PDL::Ops; use PDL::Primitive; use PDL::Ufunc; use PDL::Basic; use PDL::Slices; use PDL::Bad; use PDL::MatrixOps; use PDL::Math; use PDL::Version; use PDL::IO::Misc; use PDL::IO::FITS; use PDL::IO::Pic; use PDL::Lvalue; perl v5.12.1 2010-01-01 PDL(3)
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