Show me just the ip address

showip() { nmcli connection show $1|grep ipv4.addresses|awk '{print $2}' ; }
Sometimes it's useful to output just the ip address. Or some other information, changing the "ipv4.addresses" in command. The power of awk! Show all possible "greps" with nmcli connection show [yourInterfaceNameHere]
Sample Output
$ showip eth0
10.0.2.100/24
$ showip eth1
10.0.2.7/24
...

1
By: nnsense
2015-05-13 16:24:28

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  • This doesn't make any assumptions about your IP address and prints out one IP address per line if you have multiple network interfaces. Show Sample Output


    -3
    ifconfig | sed '/.*addr.*Bcast.*/ ! d'| sed 's/.*addr:\([0-9\.]*\).*/\1/'
    Haegin · 2010-03-26 08:13:13 0
  • From 'man netstat' "netstat -i | -I interface [-abdnt] [-f address_family] [-M core] [-N system] Show the state of all network interfaces or a single interface which have been auto-configured (interfaces statically configured into a system, but not located at boot time are not shown). An asterisk (``*'') after an interface name indicates that the interface is ``down''. If -a is also present, multicast addresses currently in use are shown for each Ethernet interface and for each IP interface address. Multicast addresses are shown on separate lines following the interface address with which they are associated. If -b is also present, show the number of bytes in and out. If -d is also present, show the number of dropped packets. If -t is also present, show the contents of watchdog timers."


    -2
    netstat -an | grep -i listen
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  • -2
    ip -f inet addr show eth0
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  • ip address show | grep eth0 | sed '1d' | awk '{print $2}' does the same, but shows network-prefix.


    2
    ip route show dev eth0 | awk '{print $7}'
    P17 · 2009-05-26 20:29:54 1

What Others Think

try awk '/ipv4.addresses/ {print $2}' to do the pattern match and field selection in one command.
snegtul · 158 weeks and 3 days ago
Ah, @snegtul beat me. However, the command doesn't work on my version of nmcli (Fedora 21) nmcli --version nmcli tool, version 0.9.10.2-2.fc21 nmcli connection show eth0 ipv4.addresses: { ip = 192.168.0.100/24, gw = 192.168.0.1 } so the simplest solution for me is sed: ... | sed '/ipv4.addresses/s/.* \(.*\),.*/\1/' Search for something delimited by space (before) and comma (after).
flatcap · 158 weeks and 3 days ago
I've just lernt that nmap --iflist is useful to show all ifaces, ip and routes. ..of course this doesn't work if we're looking for the ip to use it in a bash script.
nnsense · 157 weeks and 3 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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