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.

OpenID
or
Sign in Register

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

Hide

Credits

Site by David Winterbottom (user root).

Commands tagged ip address from sorted by
Terminal - Commands tagged ip address - 105 results
curl icanhazip.com
2012-08-23 19:30:50
User: kalikid021
Tags: ip address public
-2
Up
Down
Get your current Public IP
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl queip.tk/ip
2012-08-19 10:49:56
User: mama21mama
Tags: ip address show
-1
Up
Down
show ip adress public
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
lsof -p `pidof pidgin` | awk '{ print $9 }'|egrep `hostname` | grep -o ">[^:]\+:" | tr -d ":>" | while read line; do host $line; done;
2012-08-08 14:47:20
User: NaN0
Functions: awk egrep grep host read tr
Tags: IP pidgin ip address
0
Up
Down
Display IP addresses Pidgin IM Client is connected to
Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
dig o-o.myaddr.l.google.com @ns1.google.com txt +short
2012-07-30 06:54:57
User: quentin
Functions: dig
Tags: ip address public
0
Up
Down
Get your current Public IP

Asks Google what your current IP address is. Bonus: Remove "@ns1.google.com" and you will instead get the IP address of your DNS server.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
hostname -I
2012-07-18 19:43:48
User: bashfan
Functions: hostname
Tags: awk IP ip address
0
Up
Down
Get the IP address

That's the easiest way to do it. -I (or capital i) display all network addresses of a host

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ifconfig | sed -n 's/.*inet addr:\([0-9.]\+\)\s.*/\1/p'
2012-07-18 15:38:02
User: bcg62
Functions: ifconfig sed
Tags: IP ip address
1
Up
Down
Get the IP address
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
ip -f inet a | awk '/inet / { print $2 }'
2012-07-18 15:13:10
User: BorneBjoern
Functions: awk
Tags: awk IP ip address
3
Up
Down
Get the IP address

gives u each configured IP in a seperate line.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
nmap -T4 -sn 192.168.1.0/24
2012-06-19 17:07:24
User: drewbled
Tags: Network scanner ip address
0
Up
Down
scan subnet for used IPs

Does a ping scan on the local subnet and returns the IPs that are up

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl ifconfig.me/all
2012-05-16 18:22:28
User: pykler
Tags: Network curl ip address
9
Up
Down
Get your external IP and Network Info

Gets all kind of info, ifconfig.me rocks ...

for just the ip addess you can use ifconfig.me or ifconfig.me/ip

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
lynx -dump http://www.ip2location.com/ | sed -n '/^ *Field Name *Value *$/,/^ *\[_\] *Mobile .*Carrier.*name/p'
2012-05-02 15:46:59
User: ariver
Functions: sed
Tags: IP lynx geographical location ip address geoip external ip
0
Up
Down
Geographic location and more for current external IP address.
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
lynx -dump ip.nu
2012-05-02 14:54:12
User: ariver
Tags: IP lynx ip address external ip
0
Up
Down
Show external IP; Short and sweet.
lynx -dump ip.nu

Your IP address is 0.0.0.0

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl ip.nu
2012-04-08 19:43:36
User: VictorBjelkholm
Tags: Network curl ip address geoip
2
Up
Down
Get your external IP address ( 10 characters long )

Shortest url to a external IP-service, 10 characters.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl ifconfig.me
2012-02-19 03:25:24
User: kpike
Tags: ip address
1
Up
Down
Get your outgoing IP address
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
echo -n $(curl -Ss http://icanhazip.com) | xclip
2012-02-17 16:58:40
User: red_five
Functions: echo
Tags: wget ip address
0
Up
Down
Get your outgoing IP address

Gets the IP and sticks it into the middle-mouse-click buffer

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
wget http://icanhazip.com -qO-
2012-02-17 15:38:51
User: sreimann
Functions: wget
Tags: wget ip address
2
Up
Down
Get your outgoing IP address
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
w3m mon-ip.com -dump|grep -Eo "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"|uniq|xclip -selection clipboard
2012-02-06 14:42:03
User: anyname
Functions: grep
Tags: ip address X Window
0
Up
Down
Get your external ip right into your xclipboard
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo watch arp-scan --interface=wlan0 --localnet
2011-12-30 04:23:00
User: ramaxial
Functions: sudo watch
Tags: bash Linux find list ip address wireless ipv4 arp-scan real-time mac address
1
Up
Down
Find & watch active IP and MAC addresses in a wireless network in real time. (IPv4 only)
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
wget ifconfig.me/ip -q -O -
2011-11-30 08:30:35
User: DamirX
Functions: wget
Tags: Network curl ip address
-1
Up
Down
Get your external IP address
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl icanhazip.com
2011-11-15 19:57:01
User: o0110o
Tags: IP curl ip address
0
Up
Down
Get your external public IP address

Grabs your external public IP.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
cat /var/log/auth.log | grep -i "pam_unix(sshd:auth): authentication failure;" | cut -d' ' -f14,15 | cut -d= -f2 | sort | uniq
2011-10-25 04:58:09
User: JohnQUnknown
Functions: cat cut grep sort
Tags: ssh ip address authentication error
0
Up
Down
Get a list of IP Addresses that have failed to login via SSH

This command shows a sorted list of the IP addresses from which there have been authentication errors via SSH (possible script kiddies trying to gain access to your server), it eliminates duplicates so it's easier to read, but you can remove the "uniq" command at the end, or even do a "uniq -c" to have a count of how many times each IP address shows in the log (the path to the log may vary from system to system)

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
wget -O - -q http://checkip.dyndns.org/ | cut -d':' -f2 | cut -d'<' -f1| cut -c2-
2011-09-17 13:42:01
User: ztank1013
Functions: cut wget
Tags: wget ip address
-2
Up
Down
Check your ip public using dyndns.org

This is just a "cut" addicted variant of the previous unixmonkey24730 command...

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
wget http://checkip.dyndns.org/ -q -O - | grep -Eo '\<[[:digit:]]{1,3}(\.[[:digit:]]{1,3}){3}\>'
2011-09-17 12:51:06
User: unixmonkey24730
Functions: grep wget
Tags: wget ip address
-3
Up
Down
Check your ip public using dyndns.org
Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl http://my-ip.cc/host.json
2011-09-01 00:31:49
User: samleb
Tags: Network curl ip address geoip
0
Up
Down
Get your external IP address

JSON version.

Additionally it may give your geolocation if it's known by hostip.info

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl http://my-ip.cc/host.xml
2011-09-01 00:30:03
User: samleb
Tags: Network curl ip address geoip
-1
Up
Down
Get your external IP address

XML version.

Additionally it may give your geolocation if it's known by hostip.info

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
curl http://my-ip.cc/host.txt
2011-09-01 00:28:49
User: samleb
Tags: Network curl ip address geoip
-1
Up
Down
Get your external IP address

Additionally it may give your geolocation if it's known by hostip.info

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate