System insights with command-line tools: free and vmstat

Posted by bob on Jun 23, 2025 8:45 PM CST
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In this fifth article of the “System insights with command-line tools” series we explore free and vmstat, two small utilities that reveal a surprising amount about your Linux system’s health. free gives you an instant snapshot of how RAM and swap are being used. vmstat (the virtual memory statistics reporter) reports a real-time view of […]

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