Commands using ifconfig sorted by votes

Commands using ifconfig (103)

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save command output to image

Show Sample Output
This is sample output - yours may be different.
```
ifconfig | convert -background none label:@- miff:- | composite -tile pattern:checkerboard - -compose Dst_Over ip.png
```
90

ifconfig | convert label:@- ip.png

kev · 2011-08-24 05:58:29 31
Get all IPs via ifconfig

works on Linux and Solaris. I think it will work on nearly all *nix-es Show Sample Output
This is sample output - yours may be different.
```
10.200.10.147
127.0.0.1
```
13

ifconfig -a | perl -nle'/(\d+\.\d+\.\d+\.\d+)/ && print $1'

sneaker · 2009-07-31 09:49:17 9
Get all IPs via ifconfig

Fetches the IPs and ONLY the IPs from ifconfig. Simplest, shortest, cleanest. Perl is too good to be true... (P.S.: credit should go to Peteris Krumins at catonmat.net) Show Sample Output
This is sample output - yours may be different.
```
10.200.10.147
127.0.0.1
```
11

ifconfig | perl -nle'/dr:(\S+)/ && print $1'

xsawyerx · 2009-07-23 09:33:31 11
List your MACs address
This is sample output - yours may be different.
11

lsmac() { ifconfig -a | sed '/eth\|wl/!d;s/ Link.*HWaddr//' ; }

vando · 2011-03-19 12:41:38 10
Measures download speed on eth0
This is sample output - yours may be different.
10

while true; do X=$Y; sleep 1; Y=$(ifconfig eth0|grep RX\ bytes|awk '{ print $2 }'|cut -d : -f 2); echo "$(( Y-X )) bps"; done

stuntdawg · 2009-03-27 08:26:39 10
sends your internal IP by email

This is useful if you have need to do port forwarding and your router doesn't assign static IPs, you can add it to a script in a cron job that checks if you IP as recently changed or with a trigger script. This was tested on Mac OSX.
This is sample output - yours may be different.
10

ifconfig en1 | awk '/inet / {print $2}' | mail -s "hello world" email@email.com

rez0r · 2009-04-28 06:01:52 13
Watch Data Usage on eth0
This is sample output - yours may be different.
7

watch ifconfig eth0

kennethreitz · 2009-02-17 18:48:51 10
Resets your MAC to a random MAC address to make you harder to find.

Next time you are leaching off of someone else's wifi use this command before you start your bittorrent ...for legitimate files only of course. It creates a hexidecimal string using md5sum from the first few lines of /dev/urandom and splices it into the proper MAC address format. Then it changes your MAC and resets your wireless (wlan0:0). Show Sample Output
This is sample output - yours may be different.
```
wlan0:0   Link encap:Ethernet  HWaddr 00:07:5a:df:41:5c  #<<-w00t new random MAC-<<#
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
```
7

ran=$(head /dev/urandom | md5sum); MAC=00:07:${ran:0:2}:${ran:3:2}:${ran:5:2}:${ran:7:2}; sudo ifconfig wlan0 down hw ether $MAC; sudo ifconfig wlan0 up; echo ifconfig wlan0:0

workingsmart · 2009-07-16 16:21:44 7
Change tha mac adresse

eth0 = the name of the interface 00:01:02:03:04:05 = the new mac adresse the same thing for wireless card $ sudo iwconfig eth1 hw ether 00:01:02:03:04:05
This is sample output - yours may be different.
6

sudo ifconfig eth0 hw ether 00:01:02:03:04:05

momitov · 2009-06-04 09:02:35 9
List your MACs address
This is sample output - yours may be different.
6

ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'

rubo77 · 2011-04-28 18:33:45 5
Get all mac address
This is sample output - yours may be different.
5

ifconfig | awk '/HWaddr/ { print $NF }'

unixmonkey8473 · 2010-02-27 20:20:12 7
Show interface/ip using awk

Interfaces like lo can be omitted from the beginning, there are probably better ways of doing this, i'm a noob at awk. Show Sample Output
This is sample output - yours may be different.
```
lo 127.0.0.1
wlan0 192.168.1.100
```
5

ifconfig -a| awk '/^wlan|^eth|^lo/ {;a=$1;FS=":"; nextline=NR+1; next}{ if (NR==nextline) { split($2,b," ")}{ if ($2 ~ /[0-9]\./) {print a,b[1]}; FS=" "}}'

alf · 2010-04-15 04:34:28 19
Get IPv4 of eth0 for use with scripts

I've been using it in a script to build from scratch proxy servers. Show Sample Output
This is sample output - yours may be different.
```
192.168.0.1
```
5

ifconfig eth0 | grep "inet " | cut -d ':' -f2 | awk '{print $1}'

jaimerosario · 2010-06-29 00:06:08 5
Get your internal IP address and nothing but your internal IP address

Will return your internal IP address. Show Sample Output
This is sample output - yours may be different.
```
192.168.1.6
```
4

ifconfig $devices | grep "inet addr" | sed 's/.*inet addr:$[0-9\.]*$.*/\1/g'

matthewbauer · 2009-08-06 21:43:22 3
Delete all aliases for a network interface on a (Free)BSD system

The example command deletes all aliases for network interface 'em0' assuming that the aliases have netmask of 255.255.255.255 and the master IP has some other netmask (such as 255.255.255.0). See here -> http://my.galagzee.com/2009/07/22/deleting-all-network-interface-aliases/ for more on the rationale of this command.
This is sample output - yours may be different.
3

ifconfig | grep "0xffffffff" | awk '{ print $2 }' | xargs -n 1 ifconfig em0 delete

vwal · 2009-08-04 05:18:36 3
Get all mac address

Get mac address listed for all interfaces. Show Sample Output
This is sample output - yours may be different.
```
$ ifconfig -a| grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'
00:25:4b:a2:45:72
00:25:4b:89:98:a0
00:25:4b:ff:fe:a2
0a:00:27:00:00:00
```
3

ifconfig -a| grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'

evenme · 2010-02-27 14:30:43 7
Grab the first 3 octets of your ip addresses

For machines that have many ip blocks spanning different Class C's, this will show which ones. Show Sample Output
This is sample output - yours may be different.
```
chris@golf:~$ ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'
192.68.34
192.42.21
192.91.43
```
3

ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'

chrismccoy · 2016-09-01 14:02:43 16
Getting the ip address of eth0
This is sample output - yours may be different.
2

ifconfig eth0 | awk '/inet addr/ {split ($2,A,":"); print A[2]}'

sylvain · 2009-02-13 14:02:35 11
Mac OS X - List all of my machine's IP addresses

On the Mac, the format ifconfig puts out is little different from Linux: the IP address is space separated, instead of colon. That makes parsing the IP address easier. See releated command for Linux/Unix: http://www.commandlinefu.com/commands/view/651/getting-the-ip-address-of-eth0 Show Sample Output
This is sample output - yours may be different.
```
127.0.0.1
64.201.48.106
172.16.85.71
192.168.44.5
```
2

ifconfig | awk '/inet / {print $2}'

haivu · 2009-02-27 17:05:08 8
Grab an interface's IP from ifconfig without screen clutter

Sometimes, you don't really care about all the other information that ifconfig spits at you (however useful it may otherwise be). You just want an IP. This strips out all the crap and gives you exactly what you want. Show Sample Output
This is sample output - yours may be different.
```
eth1: 192.168.100.73
```
2

ifconfig eth1 | grep inet\ addr | awk '{print $2}' | cut -d: -f2 | sed s/^/eth1:\ /g

BoxingOctopus · 2009-11-03 19:26:40 10
Get IPv4 of eth0 for use with scripts

Simple and easy. No regex, no search and replace. Just clean, built-in tools.
This is sample output - yours may be different.
2

ifconfig eth0 | grep 'inet addr' | cut -d ':' -f 2 | cut -d ' ' -f 1

atoponce · 2010-06-26 22:36:21 4
NICs, IPs, and Mac

Needed to get the Mac of various devices on a solaris box, but didn't have root. This command used awk to display the Network device, the IP, and the MAC a line at a time.
This is sample output - yours may be different.
1

ifconfig -a | nawk 'BEGIN {FS=" "}{RS="\n"}{ if($1~ /:/) {printf "%s ", $1}}{ if($1=="inet") {print " -- ",system("arp "$2)}}'|egrep -v "^[0-9]$"

leprasmurf · 2009-03-02 23:15:13 10
Get all IPs via ifconfig

and, a lot uglier, with sed: ifconfig | sed -n '/inet addr:/s/[^:]\+:$\S\+$.*/\1/p' Edit: Wanted to be shorter than the perl version. Still think that the perl version is the best..
This is sample output - yours may be different.
1

ifconfig | awk -F':| +' '/ddr:/{print $4}'

0x89 · 2009-07-25 22:51:08 4
Get all IPs via ifconfig

The initial version of this command also outputted extra empty lines, so it went like this: 192.168.166.48 127.0.0.1 This happened on Ubuntu, i haven't tested on anything else. Show Sample Output
This is sample output - yours may be different.
```
ifconfig | awk '/ddr:[0-9]/ {sub(/addr:/, ""); print $2}'
192.168.1.23
127.0.0.1
```
1

ifconfig | awk '/ddr:[0-9]/ {sub(/addr:/, ""); print $2}'

danny_b85 · 2009-07-31 09:30:54 3
share internet connection with only one network interface

the below command create a alias for share your internet connection with another. ifconfig eth0:1 192.168.0.1/24 Its obviously necessary too activate the iptables post-routing and ip forwarding, as root: modprobe iptable_nat iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE echo 1 > /proc/sys/net/ipv4/ip_forward Be sure that the alias 192.168.0.0/24 is not your active real ip range
This is sample output - yours may be different.
1

ifconfig eth0:1 192.168.0.1/24

glaudiston · 2010-01-12 11:57:11 14
1 2 3 > Last ›

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Watch the disk fill up

While copying a large file that may take up a good chunk of your hard drive, start the copy and run this command concurrently. It will print out the disk information every second. It's pretty handy when you have a large copy with nothing to monitor the progress.

send echo to socket network

Using netcat, usuallly installed on debian/ubuntu. Also to test against a sample server the following two commands may help echo got milk? | netcat -l -p 25 python -c "import SocketServer; SocketServer.BaseRequestHandler.handle = lambda self: self.request.send('got milk?\n'); SocketServer.TCPServer(('0.0.0.0', 25), SocketServer.BaseRequestHandler).serve_forever()"

Generate a (compressed) pdf from images

use imagemagik convert

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

send echo to socket network

this command will send a message to the socket 25 on host 192.168.1.2 in tcp. works on udp and icmp understand only IP address, not hostname. on the other side (192.168.1.2), you can listen to this socket and test if you receive the message. easy to diagnose a firewall problem or not.

Monitor changed files into a log file, with day rotation, using fswatch (MacOS)

This command monitors changes in the current folder structure (subfolders included) and files, and log it into a hidden file in the same folder, called `.file_changes_YYMMDD.log`. Modify the `--exclude` parameters to define what should be skipped.

Determine whether a CPU has 64 bit capability or not

Check if you have 64bit by looking for "lm" in cpuinfo. lm stands for "long mem". This can also be used without being root.

Viewable terminal session over network.

connect to it with any network command (including web browser - if you don't mind weird formatting) curl 127.0.0.1:9876 nc 127.0.0.1 9876

Rip a CD/DVD to ISO format.

An easy method to generate ISOs from CD/DVD media.

Show git log beautifully

Only show a short of important information inline ( include branch info ), and color this log tree.

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Commands using ifconfig (103)

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