Here are the few cpu memory stats command


  

Linux command Description

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 top  ---------------------------> display and update the top cpu processes
 mpstat 1 -----------------------> display processors related statistics
 vmstat 2 -----------------------> display virtual memory statistics
 iostat 2 -----------------------> display I/O statistics (2 s intervals)
 systat -vmstat 1 --------------->BSD summary of system statistics (1 s intervals)
 systat -tcp 1   ---------------->BSD tcp connections (try also -ip)
 systat -netstat 1--------------->BSD active network connections
 systat -ifstat 1 --------------->BSD network traffic through active interfaces
 systat -iostat 1 --------------->BSD CPU and and disk throughput
 tail -n 500 /var/log/messages----->Last 500 kernel/syslog messages
 tail /var/log/warn----------------->System warnings messages see syslog.con