→ Here is the oldest guide on the Internet about the grep command https://www.cyberciti.biz/faq/howto-use-grep-command-in-linux-unix/ → egrep/`grep -E` (grep regex examples and syntax) https://www.cyberciti.biz/faq/grep-regular-expressions/
how to get help about grep command in #linux and #unix 😂 also check all my grep command examples https://www.cyberciti.biz/faq/howto-use-grep-command-in-linux-unix/ and grep regex example https://www.cyberciti.biz/faq/grep-regular-expressions/
Do you know how to use Regex? 😭 Also see our: Regular expressions in grep ( regex ) with examples https://www.cyberciti.biz/faq/grep-regular-expressions/