<div>
you want this information formatted to make it pretty?<br />
<br />
cat /var/lib/dhcpd/dhcpd.lease<wbr />s | egrep &quot;lease|client-hostname&quot;
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<div>
Thanks, jools. &nbsp;That command is close, but I can't figure out how to get the IP and hostname on the same line. &nbsp;This command puts the hostname right number the IP.
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<div>
I'll see if I can come up with something using sed/awk.<br />
<br />
Though I guess ozo will pop his head over soon and give you an answer in one really easy line :-)
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<div>
lol, sorry oklit :-) of course you may...<br />
<br />
Alas my attempt had to be postponed as I'm not near a unix system at the moment, it wouldnt have been as neat as that though :-)<br />
<br />

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<div>
OK, in a desperate bid to regain some self worth I've just knocked this up (sort of one lineer) alas I've not tested it as I still dont have a system or a suitable file so this is a sort of wild stab in the dark....<br />
<br />
it may need some tweaking to get rid of some other chars as I believe there may be one or two semi colons dotted about but it's worth a crack...<br />
<br />
<br />
<br />
cat /var/lib/dhcpd/dhcpd.lease<wbr />s | awk ' /lease/ { lease = $2 } /client-hostname/ { client = $2 } END { printf lease&quot; &nbsp;&quot;client }'<br />

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<div>
my lord have you noticed the amount of ppl on equal 17th place on the left hand side of the screen????<br />
<br />

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<div>
it's funny, I'm sitting here looking at my &quot;desperate bid&quot; and I can help but think there is something missing.....<br />
<br />
ahhh well, it'll have to wait.....<br />

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<div>
I really appreciate the help. &nbsp;jools, your command just returned the last record in the file as follows:<br />
10.10.1.34 &nbsp;&quot;MCREEL&quot;;<br />
<br />
<br />
Here is an example of the last few entries in the file:<br />
lease 10.10.1.191 {<br />
&nbsp; starts 2 2009/03/03 20:33:29;<br />
&nbsp; ends 2 2009/03/10 20:33:29;<br />
&nbsp; binding state active;<br />
&nbsp; next binding state free;<br />
&nbsp; hardware ethernet 00:17:f2:c3:b7:1c;<br />
&nbsp; uid &quot;\001\000\027\362\303\267\<wbr />034&quot;;<br />
&nbsp; set ddns-txt = &quot;31ead096ad9f5d73697f0da24<wbr />c132d0ca8&quot;<wbr />;<br />
&nbsp; set ddns-fwd-name = &quot;SADAMS.mc.bigrocksports.c<wbr />om&quot;;<br />
&nbsp; client-hostname &quot;SADAMS&quot;;<br />
}<br />
lease 10.10.1.176 {<br />
&nbsp; starts 2 2009/03/03 20:33:30;<br />
&nbsp; ends 2 2009/03/10 20:33:30;<br />
&nbsp; binding state active;<br />
&nbsp; next binding state free;<br />
&nbsp; hardware ethernet 00:16:cb:a0:d6:29;<br />
&nbsp; uid &quot;\001\000\026\313\240\326)<wbr />&quot;;<br />
&nbsp; set ddns-txt = &quot;317ed69fb02b93182468e1a08<wbr />7449f70ad&quot;<wbr />;<br />
&nbsp; set ddns-fwd-name = &quot;ddewalt.mc.bigrocksports.<wbr />com&quot;;<br />
&nbsp; client-hostname &quot;ddewalt&quot;;<br />
}<br />
lease 10.10.1.34 {<br />
&nbsp; starts 2 2009/03/03 20:47:18;<br />
&nbsp; ends 2 2009/03/10 20:47:18;<br />
&nbsp; binding state active;<br />
&nbsp; next binding state free;<br />
&nbsp; hardware ethernet 00:14:22:ca:72:fc;<br />
&nbsp; uid &quot;\001\000\024\&quot;\312r\374&quot;;<wbr /><br />
&nbsp; set ddns-txt = &quot;31b9d93458b82c91081613503<wbr />a20f371ad&quot;<wbr />;<br />
&nbsp; set ddns-fwd-name = &quot;MCREEL.mc.bigrocksports.c<wbr />om&quot;;<br />
&nbsp; client-hostname &quot;MCREEL&quot;;<br />
}<br />

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<div>
Did you try my script? It should work as expected.
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<div>
If you are absolutely sure, that all your entries have the same syntax (the same number of lines and records (separated by spaces)), you may use below oneliner.<br />
But, my dhcpd.leases has sometimes different number of lines, so above won't work.<br />
Previous - sed - version, works regardless of number of lines.<br />

<pre><code class="code-1 nolinks" id="code-265537"><span>awk 'BEGIN {RS=&quot;}$&quot;} {print $2, $33}' /path/to/dhcpd.leases</span>
</code></pre>
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<div>
Not &quot;above won't work&quot; but &quot;below won't work&quot; - sorry for mistake :)
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<div>
Perfect, oklit. &nbsp;Thank you very much. &nbsp;That is what I needed!
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<div>
Glad I could help. So if everything is ok, can you close this question by accepting working solution?
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<div>
<div class="content wysiwyg-content">
Running CentOS 5.2. &nbsp;I need to parse our dhcpd.leases file and pull out the lease IP and client-hostname. &nbsp; I.e.,<br />
<br />
10.10.50.31 Tabitha-PC<br />
10.10.10.10 John-PC<br />
etc.<br />
<br />
Does anyone have a script to do this?<br />
<br />
Thanks.
</div>
</div>


Running CentOS 5.2.  I need to parse our dhcpd.leases file and pull out the lease IP and client-hostname.   I.e.,

10.10.50.31 Tabitha-PC
10.10.10.10 John-PC
etc.

Does anyone have a script to do this?

Thanks.

Parsing dhcpd.conf file

The Dynamic Host Configuration Protocol (DHCP) is an auto configuration protocol used on IP networks and an extension of the Bootstrap Protocol. DHCP allows for computers to be configured automatically to communicate with each other over an IP network without the need for manual setup by a network administrator. The implementation of DHCP relies on a DHCP server to hand out network configuration information to DHCP-capable clients that request an IP address (and other information required or useful in communicating with other devices on an IP network). In addition to an IP address, common configuration information served over DHCP includes a default gateway, subnet mask and DNS sever(s).

DHCP

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.