How to clear DNS query cache in Linux/Unix/Mac
In Linux, I use a dial-up connection to access the Internet. Frequent dial-up disconnections cause DNS problems. How can I clear the DNS Cache using shell commands in Linux/Unix distributions?
In
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Most DNS clients cache the results of domain name resolution locally, which can speed up access to the same address. When you open a single page, there are usually multiple access requests to the same domain name. Basically, each file, image, and
Ubuntu clears dns cache. if nscd exists in the system, sudo/etc/init directly. d/nscdrestart: it doesn't matter if it doesn't. most of the methods accepted on the Internet are sudoaptitudeinstallnscdsudo/etc/init. d/nscdrestart, we can also directly
Question: How to access the Internet through the server
Perform operations on the server's Internet and Internet (the operation sequence is adjustable ):
(1) inode connection
(2) It is automatically closed after the startmynetwork. Sh terminal runs
That, since the domestic technology has appeared the DNS pollution problem, often caused a lot of foreign site access is not normal, so by reference to some blog to avoid DNS pollution method, decided to build an Ubuntu JeOS DNS cache server, the
Ubuntu Reference Manual
Summary
The Ubuntu reference manual is designedUsers running UbuntuProvides comprehensive guidance. The book provides a large numberShell-commandInstances, which cover all aspects of system management, including the
Common basic commands in Ubuntu----------------------------$>sudo reboot Restart$>sudo passwd Root Sets the password for root$>SU Root Switch Current user$>ifconfig View IP Address$>ping www.baidu.com Ping Network$>clear Clear Screen$>CD/ETC
UCloner (formerly Ubuntu-cloner) is a system backup, recovery, and cloning tool for Ubuntu. With UCloner, you can back up the ubuntu system as a squashfs image file, you can also restore the system from the image file. The specific method is as
1. Install the Chinese package. I will not say much about it. Anyone will install it. Select Chinese in "language support ".
2. Set the update source and update the system.Sudo apt-Get updateSudo apt-Get dist-UpgradeSudo apt-Get upgrade-yThere is a
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