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.

If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/

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.

Universal configuration monitoring and system of record for IT.

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



To know the IP address of the machine current running on the network

Terminal - To know the IP address of the machine current running on the network
fping -g -r 1 | grep -v unreachable | awk '{print $1}'
2011-11-19 09:11:56
User: Dhinesh
Functions: awk grep
To know the IP address of the machine current running on the network

List all the machine ip's currently running on your network


There is 1 alternative - vote for the best!

Terminal - Alternatives
fping -r1 -Aag <network>/<cidr_mask> 2>/dev/null | sort -gt. -k4
2011-12-21 22:38:51
User: SuperJC
Functions: sort
Tags: Network

Prevents the need for the grep & awk statements. Sort is optional if you don't care about the output order. The network range can also be specified as in the original post.

-A Display targets by address rather than DNS name. (Probably unnecessary...)

-a Show systems that are alive.

S fping -r1 -ag 192.168.nnn.0/24 2>/dev/null

Without sorting...

Know a better way?

If you can do better, submit your command here.

What others think

fping -g doesn't work on debian-squeeze

Comment by gnugr 235 weeks and 3 days ago

I'm sorry, it works, my mistake

Comment by gnugr 235 weeks and 3 days ago

Your point of view

You must be signed in to comment.