ngs@ngs:~$ sudo netstat -tulpn | grep tor
tcp        0      0 127.0.0.1:9050          0.0.0.0:*               LISTEN      1922/tor

[ProxyList]
# add proxy here ...
# meanwile
# defaults set to "tor"
socks4  127.0.0.1 9050

ngs@ngs:~$ proxychains google-chrome "check.torproject.org"