Using VIM as stream editor

Every person associated with the unix / linux would be familiar with the text editor called vi / vim. but not many people know that vi / vim can be used as a stream editor. This is one example of how to use vi / vim as a text editor. suppose we have a text file containing the following text:

sample.txt

we will change the “hahaha” becomes “gagaga”

here’s what we do using vim

Now let’s see change that we’ve made

cool isn’t it?