Calling curl without parameters, i get the page output, even with an http status code = 404:

    $ curl http://www.google.com/linux;
    &lt;!DOCTYPE html&gt;
    &lt;html lang=en&gt;
      &lt;meta charset=utf-8&gt;
      &lt;meta name=viewport content=&quot;initial-scale=1, minimum-scale=1, width=device-width&quot;&gt;
      &lt;title&gt;Error 404 (Not Found)!!1&lt;/title&gt;
      &lt;style&gt;
        *{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* &gt; body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}#logo{background:url(//www.google.com/images/errors/logo_sm_2.png) no-repeat}@media only screen and (min-resolution:192dpi){#logo{background:url(//www.google.com/images/errors/logo_sm_2_hr.png) no-repeat 0% 0%/100% 100%;-moz-border-image:url(//www.google.com/images/errors/logo_sm_2_hr.png) 0}}@media only screen and (-webkit-min-device-pixel-ratio:2){#logo{background:url(//www.google.com/images/errors/logo_sm_2_hr.png) no-repeat;-webkit-background-size:100% 100%}}#logo{display:inline-block;height:55px;width:150px}
      &lt;/style&gt;
      &lt;a href=//www.google.com/&gt;&lt;span id=logo aria-label=Google&gt;&lt;/span&gt;&lt;/a&gt;
      &lt;p&gt;&lt;b&gt;404.&lt;/b&gt; &lt;ins&gt;That’s an error.&lt;/ins&gt;
      &lt;p&gt;The requested URL &lt;code&gt;/linux&lt;/code&gt; was not found on this server.  &lt;ins&gt;That’s all we know.&lt;/ins&gt;
    
    $ echo $?;
    0

The status code is 0.

Calling it with --fail will not show the output:

    $ curl --fail http://www.google.com/linux;
    curl: (22) The requested URL returned error: 404 Not Found
    
    $ echo $?;
    22

The status code is 22 now ...

Id&#39; like to get the output even when http status = 404, 500 (like the first curl execution) and, at the same time, get a different system error (like in the second curl execution, $? = 22).
Is it possible with curl? If not, how could I achieve this with another tool (this tool must accept file uploads e post data! wget doesn&#39;t seems to be an alternative ...)

Thanks.

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Get page output with curl --fail