Welcome to bashoneliners.com, a curated collection of practical and well-explained Bash one-liners, snippets, tips and tricks. We aim to make each published one-liner to be of high quality: useful, easy to read, follows best practices, with clear, detailed, accurate explanation. These one-liners should help you automate tasks, troubleshoot problems, whether it be in system administration, file management, networking or programming.
ifconfig -a | perl -lne 'print $_ for /\b(?!255)(?:\d{1,3}\.){3}(?!255)\d{1,3}\b/g' | xargs nmap -A -p0-
netstat -rn | awk '/default/ { print $NF }' | head -1 | xargs -I {} ifconfig {} | awk '/ether/ {print $2}'
ifconfig | grep ^en1 -A5 | grep inet | head -n 1