1. grep: grep is a command-line utility used for searching text patterns within files.
  2. -R or --recursive: This option tells grep to search for the specified pattern recursively in all directories and subdirectories under the specified path.
  3. -n or --line-number: This option tells grep us to include line numbers in the output, showing where each match occurs in the file.
  4. -w or --word-regexp: This option tells grep to search for whole words only, not partial matches. For example, if you search for “word,” it will match “word” but not “words” or “keyboard.”
  5. <path/where/to/search>: Replace this with the actual path where you want to start your search. This can be a directory or a specific file.
  6. -e or --regexp: This option specifies the regular expression pattern you want to search for. Replace <word to search> with the actual word or pattern you want to search for. If you’re searching for a simple word, you can omit the -e option and just provide the word directly after the path.

Putting it all together, the command is used to search for the specified word or pattern within files in the specified directory and its subdirectories. It will display the matching lines along with their line numbers and will only match whole words.