Easiest way to show my IP address?

  • After I've booted up, what's the easiest way to obtain and display the IP address that the device is currently using?
    I'm using Raspbian, and ifconfig doesn't appear to be installed.

    Are there any widgets that display this information in LXDE?

    It probably is installed; you have to sudo ifconfig on Debian.

    I'm realizing that now. I think I got spoiled by Ubuntu's command line hints. I'll check it out when I power it back up.

    That's a bash thing, rather than a Ubuntu thing. I think ifconfig is just installed with different permissions.

    Yep, I forgot to sudo. ifconfig is installed by default, but it comes up with a command not found error if you don't sudo it. Thanks!

    My Raspbian shows the IP-address just before the login prompt.

    I'll disable startx with raspi-config and see if it's on my login prompt, as well.

  • The if family of tools including ifconfig are being deprecated and replaced by the newer ip commands so you can use any one of the following from the command line to determine your IP address:

    sudo ip addr show
    

    or

    sudo hostname --ip-address
    

    or if you still want to use ifconfig, and it is not already installed

    sudo apt-get install wireless-tools
    sudo ifconfig -a
    

    @jackweirdy that is the newer tools that are replacing the old if tools. Try man ip for some additional details.

    cheers for that, learnt something new today :)

    is ther an "arp" command that will show you something in line of IP address?

    @ppumkin possibly but I don't know I guess you could dump the cache,but that may return multiple hosts leaving you to puzzle out which ip belongs to which host.

    `ip a` is sufficient if you want to get the IP address :)

    None of the display commands actually need sudo permissions. It's probably shown because of a side-effect of setting your path to include /sbin. You can run `/sbin/ifconfig` or `/sbin/ip` as any user normally.

  • You can use this little python script as well.

    import socket
    
    def get_local_ip_address(target):
      ipaddr = ''
      try:
        s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
        s.connect((target, 8000))
        ipaddr = s.getsockname()[0]
        s.close()
      except:
        pass
    
      return ipaddr
    print "Raspberry Pi - Local IP Address"
    print(get_local_ip_address('10.0.1.1'))
    print(get_local_ip_address('google.com'))
    

    A bit overkill don't you think? Not much point replacing the existing Linux commands that achieve the same.

    @Jivings Bit harsh - it's an answer, that works! (I say without testing...) It could be the basis of a widget on a desktop for instance.

    @Bryan Welcome to Stack Exchange and Raspberry Pi!

    @AlexChamberlain Sorry Bryan. Hadn't had my coffee yet this morning :)

    This could even be added to the messages service that runs after login to automatically display the IP address along side the startx message. Then it would be automatic no typing required.

  • As an alternative to finding the DHCP assigned IP address, I've added a reserved IP address in my router/DHCP server. It matches the MAC address of the Raspi and always assigns the same IP address - even after a fresh install of the OS.

    With Wheezy now having SSH enabled by default, it means I can login to a freshly installed Raspberry Pi without ever needing to connect a keyboard or monitor.

    Apologies for not answering the question directly, but it seemed closely related enough to suggest.

    If it helps people find easy ways to determine the IP, I'm all for it.

  • You may be able to check the DHCP status/logs on your DHCP server. Especially if it's on your home network. On all the routers I have owned this has been fairly easy to find.

    This is helpful if you are running headless and just want to know the address to ssh to.

    @gnibbler +1 for addressing the issue for those running headless. One think to note, identifying which device is the Pi can be tricky since it does not always identify itself over the network, and so, may show up without a name in the attached devices list. This thread http://www.raspberrypi.org/phpBB3/viewtopic.php?f=36&;t=6998 has more on the problem and solution

    @SteveRobillard, mine _does_ identify itself, but it also may help someone if they see a MAC address starting like `b8:27:eb:xx:xx:xx`, it's probably a RPi :)

  • $ host raspberrypi
    raspberrypi has address 192.168.1.20
    
    $ host raspberrypi | grep ‘address’ | cut -d’ ‘ -f4
    192.168.1.20
    
    $ nslookup 192.168.1.20
    Server:  192.168.1.1
    Address:    192.168.1.1#53
    20.1.168.192.in-addr.arpa   name = raspberrypi.
    
    $ nslookup 192.168.1.20 | grep ‘=’ | cut -d’ ‘ -f3
    raspberrypi
    
  • What worked for me :

    sudo ifconfig
    

    since ifconfig was at sbin/ifconfig

    While I appreciate your response, Alex Chamberlain's comment and Steve Robillard's response already contain this information.

  • If you want to see your external ip address use this on your command line

    curl http://ipecho.net/plain; echo;

    You could create a function to make it easier.

    Edit your .bashrc and add the following function at the end of the file.

    Function to display the external ip address

    Function to display the external ip address

    Calling your function from cli

    enter image description here

    You may find more interesting ways to obtain your ip address in this link

    http://www.if-not-true-then-false.com/2010/linux-get-ip-address/

  • Shea Silverman and Jacob Bates have recently created a tool called PIP that allows you to obtain the IP of your raspberry pi without even attaching it to a screen, as it installs a script that send your IP address to a server that you can visit with your main PC. It may not be the best option in every situation, but it is a very clever hack.

  • Baby script to return the ip address, works from a prompt:

    ip address list | grep inet | grep -v 127.0.0 | cut -d " " -f 6 | cut -d "/" -f 1

  • ip a is a shortcut for ip address

    So: ip a

    should be sufficient

    There is no need to use sudo if all you are interested in doing is viewing the IP address.

    For more information, the man page for the ip utility is available by running: man ip

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Content dated before 6/26/2020 9:53 AM