What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Get involved!

You can sign-in using OpenID credentials, or register a traditional username and password.

First-time OpenID users will be automatically assigned a username which can be changed after signing in.

UpGuard checks and validates configurations for every major OS, network device, and cloud provider.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:



May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

Top Tags



Resolve a list of domain names to IP addresses

Terminal - Resolve a list of domain names to IP addresses
awk < file.name '{ system("resolveip -s " $1) }'
2009-08-17 08:09:39
Functions: awk
Resolve a list of domain names to IP addresses

Given a file of FQDN, this simple command resolves the IP addresses of those Useful for log files or anything else that outputs domain names.


There are 2 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

Kudos for awk-ing this. :-)

Just wondering if there is a shorter equivalent?

< file.name xargs resolveip
Comment by mpb 452 weeks and 3 days ago

resolveip seems to be a MySQL-installed command. For those that don't have MySQL on their systems, try this:

dig +short -f filename dig +short +noshort -f filename dig +noall +question +answer -f filename

and so on for various types and verbosities of responses

You can also pipe stuff in and use "-" as the filename:

dig [options] -f - < filename
Comment by sitaram 452 weeks and 2 days ago

Apologies for not mentioning it was a mysql utility; it's rare i bump up against a system that doesn't have at least a minimal mysql installed.

Comment by alanwilliamson 452 weeks and 2 days ago

Your point of view

You must be signed in to comment.