command to clear cache in linux

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

In Linux systems, we often use the free command to view the state of the system's memory usage. On a RHEL6 system, the display of the free command is probably a state:[[email protected] ~]# free             total       used       free     shared  

Can Cache in Linux memory be recycled? In Linux, we often use the free command to view the system memory usage status. On an RHEL6 system, the free command displays the following information: The default display unit here is kb, and my server is GB

When using top to view system resources for a specific process today, the two concepts of cache and buffer are not very clear, and a look at the following:**cache is a cache that is used for buffering between CPU and memory;**buffer is an I/O cache

Do you really know the free command of Linux?In Linux systems, we often use the free command to view the state of the system's memory usage. On a RHEL6 system, the display of the free command is probably a state:Here the default display unit is KB,

Cache & buffers in linux top Command Today, when we use top to view the usage of system resources by specific processes of the system, we are not very clear about the two concepts of cache and buffer. We have studied the following: ** Cache is a

I use dial-up connection to the Internet under Linux, frequent dialing disconnection causes the problem of DNS. How do I use shell commands to clear the DNS cache under the Linux/unix release? Under Ms-windows, you can use the ipconfig command to

original articles, reproduced please specify: reproduced from the electric Shang Sharong ec-shalom.com, specialized in electric business.The concept of caching has not been clear, resulting in the use of PHP write cache is also very not

the output of the free command on Linux. here is the result of the free run, with a total of 4 rows. For convenience, I added a column number. This can be seen as a two-dimensional array fo (free output). For example: FO[2][1] = 24677460

1. Clear DNS cache in Linux There are two methods to implement DNS caching in Linux:One is to use DNS CacheProgramNscd (Name Service cache Daemon) is responsible for managing DNS cache.One way to implement DNS caching is to use bind to set up the