I think it's safer to pass an argument.

Secondly, env $^X makes no sense. You want one of

Your other changes would indicate you want the last.

Thirdly, the changes to PERL5LIB look redundant with the paths built into the Perl you want to be running. 

BEGIN {
    if (@ARGV && $ARGV[0] eq '--fixed') {
        shift(@ARGV);
    } else {
        $ENV{PATH} = join ':', '/mypath/perl/bin', $ENV{PATH};
        delete $ENV{PERL5LIB};
        exec '/mypath/perl/bin/perl', $0, '--fixed', @ARGV;
        die ...;
    }
}

[download]

In reply to Re: reseting PATH by ikegami
in thread reseting PATH by Anonymous Monk

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.