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global_string_replace.md

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Global string replace:

BEFORE GLOBAL CHANGE
$ find . -name "*.go" | xargs grep who
./0.go:who is your daddy?
./1/1.go:who's your daddy?
./2/2.go:who is your daddy?

GLOBAL CHANGE
$ find . -name "*.go" | xargs sed "s/who is/who's/g"
who's your daddy?
who's your daddy?
who's your daddy?

AFTER GLOBAL CHANGE
$ find . -name "*.go" | xargs grep who
./0.go:who is your daddy?
./1/1.go:who's your daddy?
./2/2.go:who is your daddy?