What grep -rni does
grep -rni error .: Find text in every file recursively, ignoring case, with line numbers.
The grep command page covers what it does in general, with an example.
grep-rnierror.
grep— command — find lines matching a pattern-rni— flags — -r: search every file inside the folder, recursively; -n: with line numbers; -i: ignore caseerror— argument: a file, a folder, or text.— argument: a file, a folder, or text
Run it yourself
The same files. Nothing here can break, and nothing leaves your browser.
Where you use it
Explain other commands
Written by Mikhail Kuzmitskii