Using qx or backticks will only capture the STDOUT. I'm wondering if the calls where you are not capturing anything could be related to the "output" of the external command is going to the STDERR instead.
Whenever I have used backticks and I don't get what I expect, a common debugging technique that I use is to store the external command in a variable and print that out. That has helped me find mistakes in constructing the external command that I wanted to run.
One suggestion that you could try is to look at using Capture::Tiny, which will let you capture STDOUT, STDERR and the exit code of an external command.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|
