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mrunalp/ip_adress.rb

Created March 18, 2014 21:03
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Get IP address for an interface in ruby.
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ip_adress.rb
require 'socket'
require 'ipaddr'
# From ioctls.h
SIOCGIFADDR = 0x8915
def ip_address(iface)
sock = UDPSocket.new
buf = [iface,""].pack('a16h16')
sock.ioctl(SIOCGIFADDR, buf);
sock.close
buf[20..24].unpack("CCCC").join(".")
end
puts ip_address('em1')
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