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Sar

Collect, report, or save system activity information. This application is part of the sysstat rpm.

Examples

Monitoring disk usage, printing output every second for 100 seconds. The -p parameter prints the friendly device name.
sar -dp 1 100

Monitoring network usage, printing output every second for 100 seconds. Depending on the version of SAR that is installed you may need to use on of these two examples. See the man page for full documentation of your version.
sar -n FULL 1 100

sar -n ALL 1 100


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