Filtering IP address from ifconfig usefule in scripts

IPADDR=`ifconfig eth0 | grep -i inet | awk -F: '{print $2}'| awk '{print $1}'`
Useful in scripts while you just need an IP address in a variable.
Sample Output
IPADDR=`ifconfig | grep -i inet | awk -F: '{print $2}'| awk '{print $1}'`

echo $IPADDR
193.122.18.101

0
By: rockon
2009-02-25 22:58:19

2 Alternatives + Submit Alt

What Others Think

Or, using sed only : ifconfig eth0 | sed -n "s/.*inet [^ ]*:\([^ ]*\) .*/\1/p" and I'm sure it could be done using awk only if you prefer awk.
raphink · 507 weeks and 4 days ago
ifconfig en1 | grep -E 'inet.[0-9]' | awk '{ print $2}' Nice part is you could easily show all interfaces by simply 'infconfig | grep...' And throw a | grep -v '127.0.0.1' | to ignore loopbacks (or other nets you want to ignore) ifconfig | grep -E 'inet.[0-9]' | grep -v '127.0.0.1' | awk '{ print $2}' * Not as cool looking as yours though and only tested on Mac :)
vaporub · 507 weeks and 4 days ago
you can put the grep patterns inside the awk command ifconfig en0 | awk '/inet.[0-9]/ {print $2}' and if you wish to show all except 127.0.0.1 ifconfig | awk '/inet.[0-9]/&&!/127.0.0.1/ {print $2}'
NynjaWitay · 507 weeks and 3 days ago
you can put the grep patterns inside the awk command ifconfig en0 | awk '/inet.[0-9]/ {print $2}' and if you wish to show all except 127.0.0.1 ifconfig | awk '/inet.[0-9]/&&!/127.0.0.1/ {print $2}'
NynjaWitay · 507 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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