In Perl, you access environement variables by their names as hash keys in %ENV, so you can easily manipulate them like so:

$ENV{PATH} = $ENV{PATH} . ":/home/toronto75/bin";

When you execute a shell script, it inherits the environment.
So would any other executable, so there's actually no need to call a shell script as a wrapper for that other executable.

Update: However, when that programme terminates, and in turn, the shell script terminates after having first modified the environment and than run that other programme, the environment does not remain modified as by the shell script.

To your Perl programme, nothing has changed, except what it did itself.

Cheers, Sören

In reply to Re: shell script via perl (clarification) by Happy-the-monk
in thread shell script via perl (clarification) by toronto75

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.