How to replace a specific word in a specific line of text [closed]

Answer 1

ِYou need some thing similar to :

String string = "timestamps: login ...";
string = string.replace("socialspy: true", "socialspy: false");

Answer 2

When you read the line from the file, try checking if the string contains "socialspy" you can use the String.contains() methods

If the line contains your string, then you can user String.replaceFirst() or String.replace()

But it does look like you are using a JSON style string, try looking more into JSON.

Answer 3

Assuming you're using a decent OS and that your YAML document is called doc:

sed -i 's/socialspy: true/socialspy: false/' doc