How does the -r option enhance the search capabilities of the grep command?

The -r option in the grep command enhances search capabilities by allowing you to search recursively through directories. This means that when you use grep -r, it will not only search the specified file(s) but also all files in the specified directory and its subdirectories.

Example Usage:

grep -r "search_term" /path/to/directory

In this example, grep will look for "search_term" in all files within /path/to/directory and any nested directories. This is particularly useful for searching through large codebases or log files spread across multiple directories.