Bash Linux[ENG] IP4 filter regexp by Gáspár Lajos•Posted 2020.04.02. Best IP4 filter I have ever found… 🙂 grep -P '(((2(5[0-5]|[0-4][0-9])|(1[0-9]|[1-9])?[0-9])\.){3}((?3)))' data.log Bejegyzés navigáció Previous[HUN] ips2subnetsNext[ENG] Bash pipe return values Related Posts [ENG] My discoveries about ChatGPT ChatGPT•by Gáspár Lajos•Posted 2023.02.24. [ENG] Bash pipe return values Bash, Linux•by Gáspár Lajos•Posted 2021.03.31.