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20 <li><a href="#name">NAME</a></li>
21 <li><a href="#synopsis">SYNOPSIS</a></li>
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33 <p>
34 </p>
35 <h1><a name="name">NAME</a></h1>
36 <p>rrdinfo - extract header information from an RRD</p>
37 <p>
38 </p>
39 <hr />
40 <h1><a name="synopsis">SYNOPSIS</a></h1>
41 <p><strong>rrdtool</strong> <strong>info</strong> <em>filename.rrd</em></p>
42 <p>
43 </p>
44 <hr />
45 <h1><a name="description">DESCRIPTION</a></h1>
46 <p>The <strong>info</strong> function prints the header information from an RRD in
47 a parsing friendly format.</p>
48 <p>Check <a href="././rrdcreate.html">the rrdcreate manpage</a> if you are uncertain about the meaning of the
49 individual keys.</p>
50 <p>
51 </p>
52 <hr />
53 <h1><a name="example">EXAMPLE</a></h1>
54 <p>This is the output generated by running <strong>info</strong> on a simple RRD which
55 contains two data sources and one RRA. Note that the number after the
56 <em>last_update</em> keyword is in seconds since 1970. The string <strong>NaN</strong>
57 stands for <em>*UNKNOWN*</em> data. In the example it means that this RRD
58 has neither minimum nor maximum values defined for either of its
59 data sources.</p>
60 <pre>
61 filename = "random.rrd"
62 rrd_version = "0001"
63 step = 300
64 last_update = 955892996
65 ds[a].type = "GAUGE"
66 ds[a].minimal_heartbeat = 600
67 ds[a].min = NaN
68 ds[a].max = NaN
69 ds[a].last_ds = "UNKN"
70 ds[a].value = 2.1824421548e+04
71 ds[a].unknown_sec = 0
72 ds[b].type = "GAUGE"
73 ds[b].minimal_heartbeat = 600
74 ds[b].min = NaN
75 ds[b].max = NaN
76 ds[b].last_ds = "UNKN"
77 ds[b].value = 3.9620838224e+03
78 ds[b].unknown_sec = 0
79 rra[0].cf = "AVERAGE"
80 rra[0].pdp_per_row = 1
81 rra[0].cdp_prep[0].value = nan
82 rra[0].cdp_prep[0].unknown_datapoints = 0
83 rra[0].cdp_prep[1].value = nan
84 rra[0].cdp_prep[1].unknown_datapoints = 0</pre>
85 <dl>
86 <dt><strong><a name="filename_rrd" class="item"><em>filename.rrd</em></a></strong></dt>
88 <dd>
89 <p>The name of the <strong>RRD</strong> you want to examine.</p>
90 </dd>
91 </dl>
92 <p>
93 </p>
94 <hr />
95 <h1><a name="author">AUTHOR</a></h1>
96 <p>Tobias Oetiker <<a href="mailto:tobi@oetiker.ch">tobi@oetiker.ch</a>></p>
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