1. Get Internal IP Address(es) on Linux Shell / Command Line

1.1 Get Single IP Address by Interface

Returns plain IP address.

/sbin/ifconfig $1 | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}' ## Example usage ##/sbin/ifconfig eth0 | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}'10.20.10.1

Create simple bash function (example int-ip) with following command.

function int-ip {
        /sbin/ifconfig $1 | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}'; } ## Example usage ##int-ip eth010.20.10.1

 

1.2 Get Every Interfaces IP Address

Returns every interface and IP address pairs.

/sbin/ifconfig |grep -B1 "inet addr" |awk '{ if ( $1 == "inet" ) { print $2 } else if ( $2 == "Link" ) { printf "%s:" ,$1 } }' |awk -F: '{ print $1 ": " $3 }' ## Example output ##eth0: 10.20.10.1eth1: 10.20.1.168lo: 127.0.0.1

Create simple bash function (example int-ips) with following command.

function int-ips {
        /sbin/ifconfig |grep -B1 "inet addr" |awk '{ if ( $1 == "inet" ) { print $2 } else if ( $2 == "Link" ) { printf "%s:" ,$1 } }' |awk -F: '{ print $1 ": " $3 }'; } ## Example usage ##int-ipseth0: 10.20.10.1eth1: 10.20.1.168lo: 127.0.0.1

 

2. Get External IP Address on Linux Shell / Command Line

I use here whatismyip.org service.

2.1 Get External IP Address Using Lynx

Returns plain IP address.

lynx --dump http://ipecho.net/plain ## Example output ##80.10.10.80

已验证

Create simple bash function (example ext-ip) with following command.

function ext-ip () {
        lynx --dump http://ipecho.net/plain; } ## Example usage ##ext-ip80.10.10.80

 

2.2 Get External IP Address Using Curl

Returns plain IP address.

curl http://ipecho.net/plain; echo ## Example output ##80.10.10.80

Create simple bash function (example ext-ip) with following command.

function ext-ip () {
        curl http://ipecho.net/plain; echo; } ## Example usage ##ext-ip80.10.10.80