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How do I install dig? I can't figure out what the package name is.

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Strange that you don't have it. Package ubuntu-standard directly depends on dnsutils which contains dig, nslookup and nsupdate utilities. Is your system ok? Can you try sudo apt-get install ubuntu-standard? – ulidtko Feb 7 '11 at 2:39
You appear to have answered your own question? – belacqua Feb 19 '11 at 5:41

You can install it by opening a terminal and typing

sudo apt-get install dnsutils

Or via the Ubuntu Software Center by clicking bellow:

Install via the software center

For future reference, I found this out by doing a quick search with apt-cache:

apt-cache search dns dig

And then verified with aptitude.

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A much more easier command to determine the package, provided you know complete path of file you are searching is $ sudo dpkg -S /usr/bin/dig dnsutils: /usr/bin/dig – Jamess Feb 7 '11 at 4:53
@James, this command will only work if you had dig already installed, while Oli's will search all available packages. – Javier Rivera Feb 7 '11 at 8:20
Thanks Javier :) Good info. – Jamess Feb 7 '11 at 8:34
@Jamess You can search by filename on And FWIW, you don't need sudo to run dpkg -S. – Iain Lane Feb 7 '11 at 9:58
up vote 10 down vote accepted
sudo apt-get install dnsutils

To find out which package a file is in you can do

sudo apt-cache search dig

Sometimes that works, but in this case it was useless. You can search for which package a specific file is in using the 'Search the contents of packages' search form here:

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Another command:

apt-file search /usr/bin/dig

You should install apt-file and update it beforehand:

sudo apt-get install apt-file
sudo apt-file update
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