Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Aside from the many errors in your script, what you're trying to do won't work. A shell's environment is only passed to its child processes (if exported), not its parent or any siblings. So when you open a subshell with system in line 6 and set some environment variables for that subshell by running a couple of export commands, those variables go away as soon as that subshell closes and the system command returns. They will not be passed to the subshells started by your next two commands.

So you have a few options: only open one subshell, and talk to it with a two-way pipe. That could be done with a module like IPC::Open3, or a few other ways. You could also put your export commands in an file that's automatically sourced by your particular shell, but that would depend on your shell. Another (maybe simplest) option would be to set your environment variables within your Perl script by using the %ENV hash, so they can be inherited by any subshells. No need to try to export them in a dot-profile:

print 'Before setting: ', `echo \$MYVAR`; $ENV{MYVAR} = 'Howdy all!'; print 'After setting: ', `echo \$MYVAR`;

Aaron B.
Available for small or large Perl jobs; see my home node.

In reply to Re: I need to export variable as another user by aaron_baugher
in thread I need to export variable as another user by rahulruns

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, 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, 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.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others perusing the Monastery: (7)
    As of 2015-12-01 03:03 GMT
    Find Nodes?
      Voting Booth?

      What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

      Results (791 votes), past polls