How to grep recursively in a directory

Q: How to grep recursively in a directory

Command: grep -r [search_string] . Search for a text string in all files within the current directory and subdirectories. Usage: grep -r [string] . Details: -r means recursive. Often combined with -n (line number) as `grep -rn [string] .`.

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Accepted Answer

Command: grep -r [search_string] .

Search for a text string in all files within the current directory and subdirectories. Usage: grep -r [string] .

Details:
-r means recursive. Often combined with -n (line number) as `grep -rn [string] .`.