Your working command includes backticks while your Perl string does not contain them.

If you want to send backticks to the remote side, you will need to include them in the string, and hope that you get all the shell quoting correct. Personally, I prefer to use $() shell-syntax instead of backticks as that makes the quoting much easier. Instead of backticks in Perl, I will use qx(). That gives me

my $command = qq[$SSH root\@$one for i in \$(lspv | awk '{print \$1}')
+; do bootinfo -s \$i; done | awk '{sum+=\$1}END{print (sum\/1024)}'];
warn "[[$command]]";
my $space  = qx($command)

[download]

I don't know if I've translated your shell code properly, as to me the original seems to contain a lone double quote and some spurious single quotes.

In reply to Re^3: AIX harddisk sum of storage by Corion
in thread AIX harddisk sum of storage by pjzero@90

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.