That's why I like to avoid invoking a shell either explicitly or implicitly when calling external programs.

Isn't that exactly why system has the list argument form?

Sounds to me like you are asking for perl to restrict everyones access to useful behaviour in order to save you from yourself.

Of course, what really will happen depends on what the strings $one, $two and $three contain.

No shit Sherlock :) And the result of print $a + $b + $c; will depend upon what's in $a, $b & $c.

I once wrote that I considered ...considered harmful., harmful. And nothing I've seen in the intervening 6 years has done anything to change my mind. Most times when someone writes "XXX considered harmful", they are really saying "I just got bitten by XXX" and so I think that Perl/government/other should do something to save me from myself. And this is no exception.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
"Too many [] have been sedated by an oppressive environment of political correctness and risk aversion."

In reply to Re^3: Use of system() considered harmful by BrowserUk
in thread Use of system() considered harmful by pc88mxer

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.