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    <p>According <a href="http://nodejs.org/api/os.html#os_os_hostname" rel="noreferrer">to the node.js documentation for the "os" module</a> you need to load the "os" module, which has a <code>hostname()</code> function:</p> <pre><code>var os = require("os"); var hostname = os.hostname(); </code></pre> <p>However, that only is the hostname - without the domain name (the FQDN). There is no easy way to get the FQDN. You could use <a href="http://nodejs.org/api/dns.html" rel="noreferrer">the node.js DNS functions</a> to try to turn the IP address of the server (which you get with <code>os.networkInterfaces()</code>, see doc link above) into a name. The only problem is servers may have different interfaces and names, so you have to make a decision about which one you want.</p> <p>You tried using the <code>window</code> object, but that only exists in the JavaScript runtime environment of browsers. Server side JavaScript doesn't have windows, obviously, so there is no <code>window</code> object. <a href="https://stackoverflow.com/questions/19849136/does-node-js-have-equivalent-to-window-object-in-browser">See this question: "Does node.js have equivalent to window object in browser"</a>.</p> <p>With this information your question is a little strange - in the browser <code>window.location.hostname</code> is the host part of the URL the current page was loaded from. How do you translate that to a server context? The code you run on node.js is from that very server, by definition, so you don't actually need this information. You (may) need it in the browser because that information is variable, especially when you run mashups (JS code from various sources) your code may not know where the page it runs on was loaded from. On the server you always know it's your local filesystem.</p> <p>By the way, you can always use <code>localhost</code> as the hostname :)</p>
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    1. PONode JS return hostname
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    1. COI should have clarified. I need this name to send data to a remote source and need to differentiate which server it's coming from. If you run the command 'hostname' in linux, it will return the server name. I want this name to be passed into my config so that when it sends data, I can organize by the groups of servers running it.
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    2. CO@nocode You haven't clarified anything, because if you use `os.hostname()` as described above you get the hostname, same as with the command line command `hostname`. If you need the remote host in an HTTP connection your question has been validly marked a "duplicate" and all your "hostname" stuff is completely wrong! Basically, what you say IN TEH SAME SENTENCE(!!!) is that you need the local hostname, no the remote hostname. Make up your mind :)
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    3. COYou're not understanding. The app is sending the local hostname and other server stats as data to a remote source. Let's say my environment has 10 servers. These 10 servers will be sending data to a remote source and I need a way of defining the hostname of the 10 servers so I can differentiate them. I could write this out manually, but need this to be automatic. This has nothing to do with getting the data from a browser.
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