How do I replace a string on a large file?

I’m having big WordPress SQL dump file on my Ubuntu server which is around 7GB. Since I’m changing domain I need to replace the domain name in the file. I want to know how to do it via command line.

dev.example.com
Needs to replace with
example.com

————————————–
you can use sed with inplace editing

sed -i -e ‘s/dev.example.com/example.com/g’ filename

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