ubuntu修改hosts后马上生效

Method 1

Install first the nscd daemon with this command from the terminal:

sudo apt-get install nscd

Then clear your DNS data with this command:

sudo /etc/init.d/nscd restart

Method 2

You can also try to flush DNS cache with this command:

sudo /etc/init.d/networking restart

Method 3

Try also this command:

sudo /etc/init.d/dns-clean start