bash - Replace all IP addresses in a file to a specified string

Question

I have a huge list of IP address in a file and I want to replace all the IP address to a specified string( Example : X.X.X.X).

#Example.txt
1,1.1.1.1
2,10.10.10.10
3,5.5.5.5
4,6.6.6.6
.........

I tried replacing using sed

$sed -e 's/[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}/x.x.x.x/g' example.txt

I couldn't achieve this. Can some one help me on how to replace the IP address with a specific string?

Answer 1

You were almost there! All that you have to do is escape the repetition braces:

sed -e 's/[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}/x.x.x.x/g' test.txt