The iostat command is used for monitoring system input/output device loading by observing the time the devices are active in relation to their average transfer rates.
The iostat command generates reports that can be used to change system configuration to better balance the input/output load between physicaldisks.
How to install iostat:
iostat is available in sysstat module, so to install iostat we need to install sysstat module.
Use following command to sysstat:
The internet has gone viral with videos of celebrities and other popular personalities taking the "Ice Bucket challenge" and daring three others to do the same. Here is what you need to know about it:
When attempting to mount CentOS 6, my mount fails with
clnt_create: RPC: Unknown host
If we do a more thorough diagnostic, this is the issue
Many Linux commands accept command-line options and positional parameters. The grep command searches for a pattern in a given file. Its 2 positional parameters are the pattern and the filename. It accepts options such as -i which specifies that the search is case insensitive. An interesting scenario is when a positional parameter has a value starting with a dash ('-'). This makes the parameter indistinguishable from an option. For example, you try to grep the string -tea in a given file.