Local IPv4 address
Method 1:
ip -4 addr |grep -E '\b[0-9]+\.[0-9]+\.[0-9]+\.[0-9]\b'| awk '{ print $2}'
Method 2:
ip -4 addr |grep -E \\b[0-9]+\.[0-9]+\.[0-9]+\.[0-9]\\b | awk '{ print $2}'
Method 3:
ifconfig | grep -w inet | awk '{ print $2}'
Method 4:
ip a s | grep -w inet | awk '{ print $2}'
Method 5: for eth0 interface:
ifconfig eth0 | grep -i 'inet '| awk '{ print $2}'
Public IPv4 address
Method 1:
curl -s4 https://www.cloudflare.com/cdn-cgi/trace |grep -E '\b[0-9]+\b.[0-9]+\b.[0-9]+\b.[0-9]+\b'| awk '{ print $1}'| sed 's/ip=//g'
Method 2:
echo $(wget -qO - https://api.ipify.org)
Method 3:
echo $(curl -s https://api.ipify.org)
Method 4:
echo $(wget -qO - http://ip.yooooo.us/ip)
Method 5:
echo $(curl -s http://ip.yooooo.us/ip)
Local IPv6 address
Method 1:
ip -6 addr |grep -P '\b([0-9a-f]{1,4}\b|[\:]){3,}\b' | awk '{ print $2}'
Method 2: for eth0 interface:
ifconfig eth0 | grep -i 'inet6'| awk '{ print $2}'
Public IPv6 address
curl -s6 https://www.cloudflare.com/cdn-cgi/trace|grep -P '\b([0-9a-f]{1,4}\b|[\:]){3,}\b' | awk '{ print $0}' | sed 's/ip=//g'
