Commands using ifconfig (103)
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Disabling an interface's multicast filter is like disabling IGMP snooping on a switch. It is useful for testing and troubleshooting.
0ifconfig eth0 allmulti -
0ifconfig | grep "inet" | grep "broadcast" | awk '{print $2}'
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more variety
0ifconfig | grep "inet" | tail -1 | awk '{print $2}' -
0ifconfig eth0 | grep HW | cut -d " " -f 11
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Returns the IP, broadcast, and subnet mask of your interfaces absent any other extraneous info. I know it's a bit lame, but I've created an alias for this when I *quickly* want to know what a system's IP is. Small amounts of time add up :) Show Sample Output
0ifconfig | grep inet -
A method for aquiring the ip address using zsh. If you prefer the use of iproute2 (which, frankly, you should) then the following should provide the same (ip outputs CIDR addresses): print ${$(ip -o -4 a s eth0)[4]} we could also pass a qualifier to take only the IP and not the (CIDR) mask print ${$(ip -o -4 a s eth0)[4]:h} or, similarly, for the MAC address: print ${$(ip l l eth0)[15]}
0print ${$(ifconfig wlan0)[6]} -
Many tasks need mac id check. above command exactly do the same Show Sample Output
0ifconfig |grep HWaddr |cut -d ' ' -f 1,11 |grep eth0 |cut -d ' ' -f 2|xargs | awk -F':' '{ print $1$2$3$4$5$6 }' -
I just use this to see my ip on the server I'm working on Show Sample Output
0ifconfig eth0 | grep inet | awk '{ print $2 }' -
Thx Mass1 for the sharing
0ifconfig | egrep -A2 "eth|wlan" | tr -d "\n"| sed 's/\-\-/\n/g'|awk '{print "mac: "$5 " " $7}' | sed 's/addr:/addr: /g' -
0netstat -nr|egrep -v "Routing|Interface|lo0"|awk '{print $5}'|sort -u| while read l; do ifconfig $l ; echo " Station Addr: `lanscan -ia|grep "$l "|cut -d ' ' -f 1`" ; done
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0sudo ifconfig mlan0 down; sudo ifconfig mlan0 hw ether 00:10:10:10:08:88; sudo ifconfig mlan0 up;
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0ifconfig -a | grep inet | awk '{print $2}' | cut -d ":" -f 2 | grep -v 127.0.0.1
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merge ifconfig grep awk sed you need to change the interface of ifconfig where ip is up Show Sample Output
0ifconfig wlan0 | grep "inet addr:" | awk '{print $2}' | sed -e 's/.*:/\n\n\n/g' | sed 's/\([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}/\t\t\t<--------= & =-------->\n\n\n\n\n/g' -
Set's up ETH0 to use DHCP, easy way
0ifconfig eth0 0.0.0.0 0.0.0.0 && dhclient eth dhcp -
0ifconfig eth0 | sed -n 's/.*inet addr:\([0-9\.]*\).*/\1/p'
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0ifconfig | grep "inet addr:" | cut -d: -f2 | awk {'print($1)'} | grep -v 127.0
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Plenty of commands out there for finding external IP, but sometimes getting the [internal] IP bound to the NIC handling Internet traffic is useful. Probably not production worthy, but a useful quick kludge. Assumes IPv4 and no fancy routing. Show Sample Output
0ifconfig $(route -n |grep -m1 -e ^'0\.0\.\0\.0' |awk '{print $NF}') |grep 'inet addr' |awk '{print $2}' |sed 's/addr://1' -
0ifconfig $(route -n |awk '/0[.]0[.]0[.]0/{print $NF;exit}') | awk '/inet/{print $2}'
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same thing as the other
-1ipcalc $(ifconfig eth0 | grep "inet addr:" | cut -d':' -f2,4 | sed 's/.+Bcast:/\//g') | awk '/Network/ { print $2 } ' -
This is helpful if you connect to several networks with different subnets such as 192 networks, 10 networks, etc. Cuts first three octets of ip from ifconfig command and runs nmap ping scan on that subnet. Replace wlan0 with your interface. Assumes class c network, if class b use: cut -d "." -f 1-2 and change nmap command accordingly.
-1dhclient wlan0 && sbnt=$(ifconfig wlan0 |grep "inet addr" |cut -d ":" -f 2 | cut -d "." -f 1-3) && nmap $sbnt.0/24 -sP -
-1ifconfig eth0 | perl -ne 'print $1 if m/addr:((?:\d+\.){3}\d+)/'
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On wired connections set 'eth0' instead of 'wlan0'
-1sudo ifconfig wlan0 | grep inet | awk 'NR==1 {print $2}' | cut -c 6- -
-1ifconfig eth0|awk '/HWaddr/{gsub(/:/,"",$5);print $5}'
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get desired info from machine and pipe it txt file. Show Sample Output
-2echo "-------------" >> nicinfo.txt; echo "computer name x" >> nicinfo.txt; ifconfig | grep status >> nicinfo.txt; ifconfig | grep inet >> nicinfo.txt; ifconfig | grep ether >> nicinfo.txt; hostinfo | grep type >> nicinfo.txt; -
Found this useful for scripts where I needed to work with the machine's IP. If $DEVICE is not specified, this will return all IPs on the machine. If $DEVICE is set to a network adapter, it will return just that adapter's IP.
-2ifconfig $DEVICE | perl -lne '/inet addr:([\d.]+)/ and print $1' - < 1 2 3 4 5 >
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