how to clear cache in linux

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

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  

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

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,

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

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

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

DescriptionLike other operating systems, Linux has implemented a very efficient memory management mechanism, but any process that destroys the system's memory, then you have to clean it up, Linux provides a better way to flush \ Clear the RAM

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