From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID
	autolearn=no autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,15e9725ee4ac8322
X-Google-Attributes: gid103376,public
From: Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>
Subject: Re: [Q] Operating System Command Interface
Date: 1998/05/05
Message-ID: <354F1D90.39080B2D@cl.cam.ac.uk>#1/1
X-Deja-AN: 350439684
Content-Transfer-Encoding: 7bit
References: <6ims5j$1vo@gcsin3.geccs.gecm.com>
Content-Type: text/plain; charset=us-ascii
Organization: Cambridge University, Computer Laboratory
Mime-Version: 1.0
Newsgroups: comp.lang.ada
Date: 1998-05-05T00:00:00+00:00
List-Id: <comp.lang.ada>


John McCabe wrote:
> Am I right in thinking that, as standard, Ada has no direct perating
> system command interface akin to the C "System" call?

Look into the IEEE POSIX.5 standard, the Ada version of the Unix API.
There you'll find procedures such as

   procedure Start_Process
     (Child : out POSIX.Process_Identification.Process_ID;
      Pathname : in POSIX.Pathname;
      Template : in Process_Template;
      Arg_List : in POSIX.POSIX_String_List
               := POSIX.Empty_String_List);

in package POSIX.Process_Primitives that probably do what you want
(i.e. allow you to call "/bin/sh", etc.).

An implementation is on

  http://www.cs.fsu.edu/~baker/florist.html

Markus

-- 
Markus G. Kuhn, Security Group, Computer Lab, Cambridge University, UK
email: mkuhn at acm.org,  home page: <http://www.cl.cam.ac.uk/~mgk25/>