Find and Replace in VIM Editor

Suppose we have a text file from which we want to search for string “hello” and replace it with “hi” , then below commands shows how to do find and replace in vim editor for different scenarios.

Search for First Occurrence in a Single Line and Replace it.

Go to the line from which we need to find and replace first occurance and type below,

:s/hello/hi/

So, for example if we have a line “say hello hello !” then above command will make it as “say hi hello!”

Search for All Occurrences in a Single Line and Replace it.

Just pass, “g” at the end of command used for replacing first occurrence.

:s/hello/hi/g

So, for example if we have a line “say hello hello !” then above command will make it as “say hi hi!”