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Arun February 2016

Replace all IP addresses in a file to a specified string

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).


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?


David Hoelzer February 2016

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

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Asked in February 2016
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