What is the replace command in Linux?

replace looks for all occurrences of string from and replaces it with string to. You can specify one or more pairs of strings to search/replace in a single replace command. Use the — option to indicate where the string-replacement list ends and the file names begin.

How do I find and replace in vi EDitor?

In Vim, you can find and replace text using the :substitute ( :s ) command. To run commands in Vim, you must be in normal mode, the default mode when starting the editor. To go back to normal mode from any other mode, just press the ‘Esc’ key.