Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"

comment on

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

I need to execute a program in a remote machine, that takes its input from STDIN.

I created a user in such remote machine, and set my program as the shell for that account (so I don't need to provide shell access).

On my local node, I have this program:

#!/usr/bin/perl use IPC::Open3; use POSIX; $inputfile= $ARGV[0]; open(FILE, '<', "$ARGV[0]") or die $!; $command= "ssh user\"; $pid = open3('<&FILE', '>&STDOUT', '>&STDERR', $command); $ret=waitpid( $pid, 0 );

What I expect is that I pass the name of the file as arguments of this program ($ARGV[0]), and the contents of this file is fed as STDIN of the child I've spawn with open3. This should be received as STDIN of my remote program, and the results of the remote program would be printed on STDOUT.

This works well. However, my program only reads the first line, and then terminates.

If I do a manual test, and do ssh, and type multiple lines of input, then things work as expected.

Any clues?


In reply to Problem executing command via ssh by mgalindez

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 avoiding work at the Monastery: (7)
    As of 2019-10-14 16:47 GMT
    Find Nodes?
      Voting Booth?