<div dir="ltr">Hi,<div><br><div>1. Use &quot;bp::child c(bp::search_path(&quot;ping&quot;), &quot;127.0.0.1&quot;, &quot;-t&quot;, bp::std_out &gt; is);&quot;</div></div><div>2. I&#39;m on Windows, Boost 1.66, VS2017 and output is generated. (With your original code: &quot;Ping request could not find host 127.0.0.1 -t. Please check the name and try again.&quot;)</div><div><br></div><div>J</div></div><div class="gmail_extra"><br><div class="gmail_quote">2018-01-02 10:15 GMT+01:00 Sebastian Messerschmidt via Boost-users <span dir="ltr">&lt;<a href="mailto:boost-users@lists.boost.org" target="_blank">boost-users@lists.boost.org</a>&gt;</span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
I&#39;m using boost 1.64 on Windows7 with VisualStudio 2015 64bit.<br>
While testing boost.process I&#39;ve encountered some issues that I&#39;m not able to resolve:<br>
<br>
1. Passing of multiple parameters:<br>
<br>
Consider this minimal example:<br>
<br>
&lt;code&gt;<br>
void test_sync()<br>
{<br>
        try<br>
        {<br>
                bp::ipstream is;<br>
                bp::child c(bp::search_path(&quot;ping&quot;), &quot;127.0.0.1 -t&quot;, bp::std_out &gt; is);<br>
                std::string line;<br>
                while (c.running() &amp;&amp; std::getline(is, line) &amp;&amp; !line.empty())<br>
                {<br>
                        std::cerr &lt;&lt; line &lt;&lt; std::endl;<br>
                }<br>
                c.wait();<br>
        }<br>
        catch (const std::exception&amp; e)<br>
        {<br>
                std::cerr &lt;&lt; &quot;Error in execution: &quot; &lt;&lt; e.what();<br>
        }<br>
}<br>
&lt;/code&gt;<br>
<br>
This doesn&#39;t correctly execute &quot;ping 127.0.0.1 -t&quot;, instead it will act like &quot;ping 127.0.0.1&quot;. I could not find an up2date example on how to pass parameters correctly. Any ideas?<br>
<br>
2. No output on std::cout<br>
It seems that some applications don&#39;t output to std::cout/clog/cerr but somehow via printing to console directly (my guess as it is colored output on windows)<br>
In those instances, redirection fails. Can anyone think of a way to still monitor the output of the spawned child?<br>
<br>
Cheers<br>
Sebastian<br>
<br>
<br>
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</blockquote></div><br></div>