Shell Note: Get the native IP address

#!/bin/bash#2.sh# Write a shell script to get the network address of this machine. #比如: The IP address of this machine is: 192.168.100.2/255.255.255.0, then its network address is 192.168.100.1/255.255.255.0# Note: Bcast with the previous IP address is two spaces, So make sure to delete all two blanks.
#grep后面的搜索词加不加引号都可以, if it is a longer, there are spaces, such as inet addr, just add quotation marks, only mask can not add
#之所以搜索inet addr Because, just search inet, and IPv6 's address.
ip= ' Ifconfig eth0 | grep ' inet addr ' | Sed ' s/^.*addr://g ' |sed ' s/  bcast:.*$//g ' mask= ' ifconfig eth0 | grep MASK |sed ' s/^.*mask://g ' echo ' $IP/$MASK ' exit

　　

Shell Note: Get the native IP address