This progam starts another prog and reads from its STDOUT. The other prog just prints hi there in an infinite loop. 

#!/usr/bin/perl -w

open (PIPE,"printsth |") or die $!;

while(<PIPE>) {print; last if $i++ >=1000; }

close(PIPE) or die "Quit with exit status: $? message: $!" ;

[download]
 
#prog printsth 
#!/usr/bin/perl -w

print "hi there", $/ while(1);

[download]

When i run my first scirpt it (close) terminates the pipe but fails for some reason. However i don't see my program opened through the script running in the system so it has been forced to terminate somehow

hi there
....
....
hi there
hi there
Quit with exit status: 13 message:  at termpipe line 7.

[download]

In reply to Re: Portable Process Control by sk
in thread Portable Process Control by scmason

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.