Hide

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.

Hide

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:

Hide

News

2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.
Hide

Tags

Hide

Functions

ARP Scan

Terminal - ARP Scan
sudo arp-scan -l
2011-02-21 21:58:27
Functions: sudo
8
ARP Scan

A much quicker and (not dirtier) option. use the man page for help. On linux/ubuntu you will need to `sudo apt-get -y install arp-scan`.

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
if [ -x /sbin/arping ] ; then for i in {1..255} ; do echo arping 10.1.1.$i ; arping -c 1 10.1.1.$i | grep reply ; done ; fi
2011-02-21 21:03:09
User: felix001
Functions: echo grep
0

The following syntax will scan a range of IP addresses. At the point of a ARP response being received it will show a reply message.

www.fir3net.com

arp-scan -l -g -interface (nic)
2011-01-13 20:29:37
User: pebkac
Functions: arp
-1

This command will scan the subnet and exlude duplicates

Know a better way?

If you can do better, submit your command here.

What others think

Problem being is that arp-scan isnt installed by default on a number of disto`s.

Comment by felix001 196 weeks and 2 days ago

neither *cough* is arping

# arping

-sh: arping: command not found

Comment by linuxrawkstar 196 weeks and 2 days ago

PS- your loop is very graceful and I voted you up. Very clever scripting.

Comment by linuxrawkstar 196 weeks and 2 days ago

Your point of view

You must be signed in to comment.

Related sites and podcasts