regex101: Matches Content-Type field of HTTP response

Regular Expression

\s+Content-[Tt]ype:\s*\S+

New

Accept-Ranges: bytes
Cache-Control: max-age=604800
Content-Type: text/html
Date: Fri, 14 Aug 2015 17:45:05 GMT
Etag: "359670651"
Expires: Fri, 21 Aug 2015 17:45:05 GMT
Last-Modified: Fri, 09 Aug 2013 23:54:35 GMT
Server: ECS (fty/2FA4)
X-Cache: HIT
x-ec-custom-error: 1
Content-Length: 1270


-                     0%[                      ]       0  --.-KB/s             <!doctype html>
<html>
<head>
    <title>Example Domain</title>

    <meta charset="utf-8" />
    <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <style type="text/css">
    body {
        background-color: #f0f0f2;
        margin: 0;
        padding: 0;
        font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
        
    }
    div {
        width: 600px;
        margin: 5em auto;
        padding: 50px;
        background-color: #fff;
        border-radius: 1em;
    }
    a:link, a:visited {
        color: #38488f;
        text-decoration: none;
    }
    @media (max-width: 700px) {
        body {
            background-color: #fff;
        }
        div {
            width: auto;
            margin: 0 auto;
            border-radius: 0;
            padding: 1em;
        }
    }
    </style>    
</head>

<body>
<div>
    <h1>Example Domain</h1>
    <p>This domain is established to be used for illustrative examples in documents. You may use this
    domain in examples without prior coordination or asking for permission.</p>
    <p><a href="http://www.iana.org/domains/example">More information...</a></p>
</div>
</body>
</html>

Regular Expressions 101

Regular Expression

Substitution