Why are you using $SIG{CHLD} with system? You shouldn't wait for a child launched using system.

This was just a sample piece of code distilled down from a much larger perl program. In the big program, I'm running commands in the background, that take an arbitrary amount of time to complete. I don't want to be leaving any zombie processes around, so I used wait() with $SIG{CHLD} to mitigate this.

Should I be doing something differently here, or should I be responsible for managing the handling of $SIG{CHLD} whenever I want to run a system() command?

update: The zombies are left after forking a background process, not using system. I didn't make that clear

In reply to Re^3: system() returns -1 with $SIG{CHLD}? by cmv
in thread system() returns -1 with $SIG{CHLD}? by cmv

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.