# grep -rni

`grep -rni error .`

Find text in every file recursively, ignoring case, with line numbers.

## What each part does

- `grep` — command — find lines matching a pattern
- `-rni` — flag (a command option)
- `error` — argument: a file, a folder, or text
- `.` — argument: a file, a folder, or text

Source: https://zero2vibecode.com/explain/grep-rni