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).

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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