redoules.github.io/linux/get_ip_linux.html
Guillaume 900a7ce587 added an article
about Synology API
2020-01-03 09:56:38 +01:00

305 lines
14 KiB
HTML

<!DOCTYPE html>
<html lang="fr">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<meta name="description" content="Data Science for Political and Social Phenomena">
<meta name="author" content="Guillaume Redoulès">
<link rel="icon" href="../favicon.ico">
<title>Check your current ip address - Linux</title>
<!-- JQuery -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script>
window.jQuery || document.write('<script src="../theme/js/jquery.min.js"><\/script>')
</script>
<!-- Bootstrap core CSS -->
<link rel="stylesheet" href="../theme/css/bootstrap.css" />
<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<link rel="stylesheet" type="text/css" href="../theme/css/ie10-viewport-bug-workaround.css" />
<!-- Custom styles for this template -->
<link rel="stylesheet" type="text/css" href="../theme/css/style.css" />
<link rel="stylesheet" type="text/css" href="../theme/css/notebooks.css" />
<link href='https://fonts.googleapis.com/css?family=PT+Serif:400,700|Roboto:400,500,700' rel='stylesheet' type='text/css'>
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
<meta name="tags" content="Bash" />
</head>
<body>
<div class="navbar navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="..">Guillaume Redoulès</a>
</div>
<div class="navbar-collapse collapse" id="searchbar">
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">About<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="../pages/about.html">About Guillaume</a></li>
<li><a href="https://github.com/redoules">GitHub</a></li>
<li><a href="https://www.linkedin.com/in/guillaume-redoul%C3%A8s-33923860/">LinkedIn</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Data Science<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="..#Blog">Blog</a></li>
<li><a href="..#Python">Python</a></li>
<li><a href="..#Bash">Bash</a></li>
<li><a href="..#SQL">SQL</a></li>
<li><a href="..#Mathematics">Mathematics</a></li>
<li><a href="..#Machine_Learning">Machine Learning</a></li>
<li><a href="..#Projects">Projects</a></li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Projects<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="https://github.com/redoules/redoules.github.io">Notes (Github)</a></li>
</ul>
</li>
<!--<li class="dropdown">
<a href="../feeds/blog.rss.xml">Blog RSS</a>
</li>-->
</ul>
<form class="navbar-form" action="../search.html" onsubmit="return validateForm(this.elements['q'].value);">
<div class="form-group" style="display:inline;">
<div class="input-group" style="display:table;">
<span class="input-group-addon" style="width:1%;"><span class="glyphicon glyphicon-search"></span></span>
<input class="form-control search-query" name="q" id="tipue_search_input" placeholder="e.g. scikit KNN, pandas merge" required autocomplete="off" type="text">
</div>
</div>
</form>
</div>
<!--/.nav-collapse -->
</div>
</div>
<!-- end of header section -->
<div class="container">
<!-- <div class="alert alert-warning" role="alert">
Did you find this page useful? Please do me a quick favor and <a href="#" class="alert-link">endorse me for data science on LinkedIn</a>.
</div> -->
<section id="content" class="body">
<header>
<h1>
Check your current ip address
</h1>
<ol class="breadcrumb">
<li>
<time class="published" datetime="2018-08-17T10:37:00+02:00">
17 août 2018
</time>
</li>
<li>Linux</li>
<li>Bash</li>
</ol>
</header>
<div class='article_content'>
<h3>Check your current ip address</h3>
<p>Run the command </p>
<div class="highlight"><pre><span></span>ip addr show
</pre></div>
<p>and that will give you every information available</p>
<div class="highlight"><pre><span></span>4: eth0: &lt;&gt; mtu 1500 group default qlen 1
link/ether 5c:51:4f:41:7a:b1
inet 169.254.33.33/16 brd 169.254.255.255 scope global dynamic
valid_lft forever preferred_lft forever
inet6 fe80::390a:f69e:1ba2:2121/64 scope global dynamic
valid_lft forever preferred_lft forever
3: eth1: &lt;BROADCAST,MULTICAST,UP&gt; mtu 1500 group default qlen 1
link/ether 0a:00:27:00:00:03
inet 192.168.56.1/24 brd 192.168.56.255 scope global dynamic
valid_lft forever preferred_lft forever
inet6 fe80::84cd:374e:843f:f82f/64 scope global dynamic
valid_lft forever preferred_lft forever
15: eth2: &lt;&gt; mtu 1500 group default qlen 1
link/ether 00:ff:d2:8a:19:c3
inet 169.254.40.62/16 brd 169.254.255.255 scope global dynamic
valid_lft forever preferred_lft forever
inet6 fe80::f199:2ca0:7aff:283e/64 scope global dynamic
valid_lft forever preferred_lft forever
1: lo: &lt;LOOPBACK,UP&gt; mtu 1500 group default qlen 1
link/loopback 00:00:00:00:00:00
inet 127.0.0.1/8 brd 127.255.255.255 scope global dynamic
valid_lft forever preferred_lft forever
inet6 ::1/128 scope global dynamic
valid_lft forever preferred_lft forever
5: wifi0: &lt;BROADCAST,MULTICAST,UP&gt; mtu 1500 group default qlen 1
link/ieee802.11 5c:51:4f:41:7a:ad
inet 192.168.1.1/24 brd 192.168.1.255 scope global dynamic
valid_lft 42720sec preferred_lft 42720sec
inet6 fe80::395f:3594:1dc2:57e3/64 scope global dynamic
valid_lft forever preferred_lft forever
21: wifi1: &lt;&gt; mtu 1500 group default qlen 1
link/ieee802.11 5c:51:4f:41:7a:ae
inet 169.254.12.77/16 brd 169.254.255.255 scope global dynamic
valid_lft forever preferred_lft forever
inet6 fe80::58d5:630:cbbd:c4d/64 scope global dynamic
valid_lft forever preferred_lft forever
12: eth3: &lt;&gt; mtu 1472 group default qlen 1
link/ether 00:00:00:00:00:00:00:e0:00:00:00:00:00:00:00:00
inet6 fe80::100:7f:fffe/64 scope global dynamic
valid_lft forever preferred_lft forever
10: eth4: &lt;BROADCAST,MULTICAST,UP&gt; mtu 1500 group default qlen 1
link/ether 22:b7:57:52:5f:ff
inet 192.168.42.106/24 brd 192.168.42.255 scope global dynamic
valid_lft 6659sec preferred_lft 6659sec
inet6 fe80::5110:eb6f:deb0:45c4/64 scope global dynamic
valid_lft forever preferred_lft forever
</pre></div>
<p>You can select only one interface</p>
<div class="highlight"><pre><span></span>ip addr show eth0
</pre></div>
<p>and only the relevant information will be displayed</p>
<div class="highlight"><pre><span></span>4: eth0: &lt;&gt; mtu 1500 group default qlen 1
link/ether 5c:51:4f:41:7a:b1
inet 169.254.33.33/16 brd 169.254.255.255 scope global dynamic
valid_lft forever preferred_lft forever
inet6 fe80::390a:f69e:1ba2:2121/64 scope global dynamic
valid_lft forever preferred_lft forever
</pre></div>
<h3>Check your current ip address the old way</h3>
<p>The <code>ifconfig</code> command will return information regarding your network interfaces. Let's try it:</p>
<div class="highlight"><pre><span></span>ifconfig
</pre></div>
<div class="highlight"><pre><span></span>eth1 Link encap:Ethernet HWaddr 0a:00:27:00:00:03
inet adr:192.168.56.1 Bcast:192.168.56.255 Masque:255.255.255.0
adr inet6: fe80::84cd:374e:843f:f82f/64 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
eth4 Link encap:Ethernet HWaddr 22:b7:57:52:5f:ff
inet adr:192.168.42.106 Bcast:192.168.42.255 Masque:255.255.255.0
adr inet6: fe80::5110:eb6f:deb0:45c4/64 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
lo Link encap:Boucle locale
inet adr:127.0.0.1 Masque:255.0.0.0
adr inet6: ::1/128 Scope:Global
UP LOOPBACK RUNNING MTU:1500 Metric:1
Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
wifi0 Link encap:UNSPEC HWaddr 5C-51-4F-41-7A-AD-00-00-00-00-00-00-00-00-00-00
inet adr:192.168.1.1 Bcast:192.168.1.255 Masque:255.255.255.0
adr inet6: fe80::395f:3594:1dc2:57e3/64 Scope:Global
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Packets reçus:0 erreurs:0 :0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Octets reçus:0 (0.0 B) Octets transmis:0 (0.0 B)
</pre></div>
<p>On the left column you have the list of network adapters. The <code>lo</code> is the local loopback, it is an interface that points to the localhost. Interfaces starting with <code>eth</code> refer to wired connections over ethernet (or sometimes USB in the case of a phone acting as an access point over USB). Interfaces starting with <code>wlan</code>or <code>wifi</code> refer to wireless connections.</p>
<p>On the right column you have some information corresponding to the interface such as the IPv4, the IPv6, the mask, some statistics about the interface and so on.</p>
</div>
<aside>
<div class="bug-reporting__panel">
<h3>Find an error or bug? Have a suggestion?</h3>
<p>Everything on this site is avaliable on GitHub. Head on over and <a href='https://github.com/redoules/redoules.github.io/issues/new'>submit an issue.</a> You can also message me directly by <a href='mailto:guillaume.redoules@gadz.org'>email</a>.</p>
</div>
</aside>
</section>
</div>
<!-- start of footer section -->
<footer class="footer">
<div class="container">
<p class="text-muted">
<center>This project contains 115 pages and is available on <a href="https://github.com/redoules/redoules.github.io">GitHub</a>.
<br/>
Copyright &copy; Guillaume Redoulès,
<time datetime="2018">2018</time>.
</center>
</p>
</div>
</footer>
<!-- This jQuery line finds any span that contains code highlighting classes and then selects the parent <pre> tag and adds a border. This is done as a workaround to visually distinguish the code inputs and outputs -->
<script>
$( ".hll, .n, .c, .err, .k, .o, .cm, .cp, .c1, .cs, .gd, .ge, .gr, .gh, .gi, .go, .gp, .gs, .gu, .gt, .kc, .kd, .kn, .kp, .kr, .kt, .m, .s, .na, .nb, .nc, .no, .nd, .ni, .ne, .nf, .nl, .nn, .nt, .nv, .ow, .w, .mf, .mh, .mi, .mo, .sb, .sc, .sd, .s2, .se, .sh, .si, .sx, .sr, .s1, .ss, .bp, .vc, .vg, .vi, .il" ).parent( "pre" ).css( "border", "1px solid #DEDEDE" );
</script>
<!-- Load Google Analytics -->
<script>
/*
(function(i, s, o, g, r, a, m) {
i['GoogleAnalyticsObject'] = r;
i[r] = i[r] || function() {
(i[r].q = i[r].q || []).push(arguments)
}, i[r].l = 1 * new Date();
a = s.createElement(o),
m = s.getElementsByTagName(o)[0];
a.async = 1;
a.src = g;
m.parentNode.insertBefore(a, m)
})(window, document, 'script', '//www.google-analytics.com/analytics.js', 'ga');
ga('create', 'UA-66582-32', 'auto');
ga('send', 'pageview');
*/
</script>
<!-- End of Google Analytics -->
<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="../theme/js/bootstrap.min.js"></script>
<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<script src="../theme/js/ie10-viewport-bug-workaround.js"></script>
</body>
</html>